Intck sas. 4 and SAS® Viya® 3. Intck sas

 
4 and SAS® Viya® 3Intck sas  When you use the LAGn function, you need to understand its nature

to calculate the 2-lagged, 3-lagged, n-lagged, etc. DATA Step Programming. The INTCK function using the default discrete method counts the number of times the beginning of an interval is reached in moving from the first date to the second. If you are performing a calculation such as age, or tenure, then be sure to use the 'continuous' parameter of intck(). References. The INTNX function increments a date, time, or datetime value by intervals such as DAY, WEEK, QTR, and MINUTE, or a custom interval that you define. Where time is money, Viya saves you both. However, most cultures observe certain non-productive days that they call "holidays", and this use of the INTCK function does not consider these when discounting the total sum of days. You will have to create a new variable in DATA step creating a new data set. Also with INTCK you need to consider if you are counting month boundaries or month intervals. With our cloud-native AI and analytics platform, you can understand what’s happening with your data now, predict how to pivot seamlessly, and make progress faster. To calculate current. days=end - start + 1 ; Share. SAS® Help Center. Re: Use INTCK in open code. "as is" without warranty of any kind, either express. INTCYCLE Function. Interval Functions INTNX and INTCK Lags, Leads, Differences, and Summations Transforming Time Series Manipulating Time Series Data Sets Time Series Interpolation. A DataFrame in pandas is analogous to a SAS data set - a two-dimensional data source with labeled columns that can be of different types. Y1. sas. About This Book. SAS® Functions and CALL Routines: Reference documentation. You provide the start time, the end time, and the desired interval, and the INTCK function returns the difference in seconds, minutes, or hours. You could use the DAY interval. if start is charecter then do as following. The INTNX function returns the SAS date value for the beginning date, time, or datetime value of the interval that you specify in the start-from argument. name < multiplier >< . documentation. The INTNX function returns the SAS date value for the. the first two are the translation of the INTNX where is adding one month and returning the begin of the month. Aligning SAS Date Output within Its Intervals. intck関数で日付間隔を算出した場合に、開始日を基準値として設定することはできますか。 [回答] sas 9. The Basics. INTCK Function. sas. To find the difference in values of variable between observations just use the DIF () function (related to the LAG () function). The INPUT function cannot be called by %SYSFUNC. SAS® Viya™ 3. The SAS interval functions INTNX and INTCK perform calculations with date, datetime values, and time intervals. SAS® Visual Data Mining and Machine Learning 8. calendar_days =intck (' dt day', date2, date1); calendar_days1 =intck ('day', date2, date1); week_days=intck. Adj_form1=floor((intck(‘month’,dob,today)-(day(today)<day(dob)))/12); The FLOOR function in this formula will round down to the nearest whole number. INTCK can give results that aren't what you want in all cases, as it counts from the beginning of the interval (see the Details section of the documentation). SAS will read as literal ( eg: 'Hire Date'n) This might cause issue downstream, so to avoid this you can use VALIDVARNAME=V7. SAS Web Report Studio. Two of my date variables are numeric in MMDDYYYY format. Example 3: Using Custom Intervals with the INTCK Function. The increment is based on a starting date, time, or datetime value, and on the number of time intervals that you specify. com. Example. '. date1 = day (date): Returns the day of month from the variable date. For example: data have1;SAS® 9. SAS® Visual Data Mining and Machine Learning 8. 80 day_diff_coupexp=intck('day',couponexpiry,today); 81. SAS is headed back to Vegas for an AI and analytics experience like no other! Whether you're an executive, manager, end user or SAS. Regardless of role, everyone in your organization will feel the impact of increased performance and productivity. com. sas. The INTCK function using the default discrete method counts the number of times the beginning of an interval is reached in moving from the first date to the second. Timestamp ('2019-07-15') mydate2=pd. Posted 08-31-2017 12:11 AM (7829 views) | In reply to EEEY. The alternative method, which is the default method, is 'Discrete'. format. Hi, I have two variables :rdq and datadate, I wanna calculate the days between two dates, I use the folllowing code: data f_f; set f_l2; days=intck('day', datadate, rdq); run; but the code not work all the days are '. SAS Interface to Application Response Measurement (ARM) Security. You can easily test that to be certain that is the way it is functioning. If neither expression is true, then the compound expression is true. if end is charecter then do as following. sas. Customer. 2, a fifth argument to the INTCK function was added which will also help calculate a person's age. Date variables in SAS are simply integers where 1. These optional parameters can be used when calculating the difference between two dates and the 'Continuous' method actually. the database): permno (identifier of the company), date, ret (return) shrout (shares outstanding), prc (price), ME (=shrout*prc), exchcd (exchange code, not shown. (To convert the SAS date value to a calendar date, use any valid SAS date format, such as the DATE9. DATETIME values are seconds. Working with User-Defined Formats. These two functions complement each other: INTCK computes the difference between two data, while INTNX. The function INTCK('MONTH', '1jan2021'd, '31jan2021'd) returns 0, because the two dates are within the same month. ); format date1 date2 yymmn6. INTINDEX Function. The INTCK function in SAS returns the number of interval boundaries that lie between two SAS dates, times, or timestamp values. If you do specify datetimes you need to use DT in front of the interval specification, as your first one which is why it works. While these functions are available in Base SAS, they are maintained by the developers who look after SAS/ETS (econometrics and time series). The Basics. BAN) AS COUNT, CASE WHEN COUNT (A. Sample. is the name of the function to execute. Solved: Hello, Can anyone help me with the following code, please. 3 appeared in the IF statement. By default, Sunday is the beginning of the week interval. If the argument's value is within 1E-12 of an integer, the function results in that integer. D. AIRY Function. sas. Mathematical Optimization, Discrete-Event Simulation, and OR. When you use the INTCK function by default it is considered as a. *,B. If your data are recorded to the minute, it won't matter. 0 Likes Reply. SAS provides date, time, and datetime intervals for counting different periods of elapsed time. To recap:-- LAGn is a queue of N items in memory occupying <item length>*N bytes. Hello SAS Community, I am working on a SQL and SAS data. ; datalines ; Andy Lincoln Bernard Barren Michael Smith Chad Simpson Arnolds Derrick Smith Henrys Eric Millerton Smith Frank Giovanni Goode ; run ; /*view dataset*/ proc. SAS is headed back to Vegas for an AI and analytics experience like no other! Whether you're an executive, manager, end user or SAS. 1 Answer. It will not print a function derived from other variables. INTCK function created identical values except for the dates with DEC 31. 1 関⁠数⁠と⁠C⁠A⁠L⁠L⁠ル⁠ー⁠チ⁠ン⁠: リ⁠フ⁠ァ⁠レ⁠ン⁠ス documentation. If you simply need to know that there is 1 month difference between the 31-May and the 01-Jun, then use the 'discrete' (default) parameter. Format new_date yymmn6. Sample 41732: Determine the week number of a month. sas. The intck function can return a negative value if the second value is less than the first. Example. So that we can call and refer to the INTCK as INTerval ChecK, everyone knows the INTCK function, which helps to return the integer count of the numbers in. INTINDEX Function. com The INTCK Function in SAS (real-life scenarios) The INTCK function can be used in multiple scenarios but here are those are on top of my mind where it can be used extensively: 1. The INTCK and INTNX are the types of functions that are returned with a number of. The function can use a character constant, a variable, or an expression that contains an interval name, and can use a discrete or a continuous method to measure time. These functions are crucial for prediction, scheduling, trend analysis, and reporting. ADDRLONG Function. There is no interval named DAYS. Where time is money, Viya saves you both. But perhaps you just want to take the difference between the year number, independent of when in the year the date was. The SAS code for the INTCK implementation using PROC SQL is presented in the Appendix of this paper. Returns the number of interval boundaries of a given kind that lie between two SAS dates, times, or timestamp values encoded as DOUBLE. Here, the start date is b_date, the end date is wt_date1, and the time interval is 'year'. In SAS, you use the INTCK function to calculate the difference between two timestamps. If the value of argument is positive, the INT function has the same result as the FLOOR function. I was using INTCK to do this. They take the data variables as arguments and return the result which is stored into another variable. Dear SAS experts: I'm trying to recreate a SURV_MM variable in the gold-standard dataset. sas. Solved: data _null_; days365=intck('day365','31dec2009'd,'19dec2010'd); put days365 = ; run; results : day365 = 1 Why 1 is coming. Number of working days between two dates in SAS is also accomplished using INTCK function Let’s see an Example of each. t1. I want to calculate the month between 01FEB2021 and 31JAN2022, but even with the continous option the result is 11 month. com. ) start date: The start date; end date: The end dateSAS® Viya™ 3. So, if you use the DATEPART function, it returns the number of days between your date and the 1st of January, 1960. So, although 22JUN2020 and 20JUL2020 belong to different months, the number of completed months between these. If you really want to compute number of months between two dates, I would suggest using MONTH instead of QUARTER as the first argument to INTCK. D. The INTCK function in SAS returns the number of interval boundaries that lie between two SAS dates, times, or timestamp values. Whether you're an executive, manager, end user or SAS partner, SAS Innovate is designed for everyone on your team. INTRR Function. excerpt: The string of characters to search for within source. 4-Jan-2010. WEEKDAY<daysW> in INTCK Function: The INTCK function in SAS returns the number of interval boundaries that lie between two SAS dates, times, or timestamp values. ポイントは、2つの日付を、日付としてではなく8ケタの数字として見て計算してるところ。. PROC SQL Noprint;. is a unit of measurement that SAS can count within an elapsed period of time, such as DAYS, MONTHS, or HOURS. thanks RahulRe: re: Number of Days between two date with Leap Year. INTNEST Function. I believe you forgot about weekends and especially holidays. . sas. The INTNX () function is used to loop through dates based on an offset. shift-index >. SAS is headed back to Vegas for an AI and analytics experience like no other! Whether you're an executive, manager, end user or SAS partner, SAS Innovate is designed for everyone on. For example, if you are using the INTCK function to count the months between two dates, regardless of the actual day of the month that is specified by the date in the beginning value, SAS treats. I have code that, via the intck function, calculates the number of days between to dates. Re: INTCK and INTNX. 33 rounded to the nearest tenth equals 3*0. But Friday close to Monday open. com. If all the values of all arguments are missing,. is a unit of measurement that SAS can count within an elapsed period of time, such as DAYS, MONTHS, or HOURS. You need to wrap your functions in %SYSFUNC (). Syntax of INTCK function: INTCK(interval , start-date-time, end-date-time, <'method'>) method: – It’s an optional parameter. The INTNX function increments (either. However, a little tweaking is necessary to get exactly what we need. SAS® 9. In binary arithmetic, 0. There are several different functions and/or. data test; a=2; b="a character variable"; call symput('a', a); call symput('b', b); run; Use this form when macro-variable is also the name of a SAS variable or a character expression that contains a SAS variable. SAS Date and Time Functions. i am getting business days excluding weekends/holidays in the data BSDAY however i am not clear on the code for DATA WANT as to how do i reference the actual data set(ABC) which has multiple rows & columns to add BUSINESSDAYS to ORDER_DATE. Here are. I'm trying to group those results into range buckets using 1 - 5 days, 6 - 10, days, 11 - 15 days, 16 - 20 days, 21 - 30 days, and 30+ days. 0 false 1 true . So, INTCK works only with SAS date values, such as '01JUN2019'd, or integers representing days from Jan 1, 1960. EDIT: If you add the continuous option then the results change. 3. INTCK() function defines interval boundaries and the ability to create your own custom intervals beyond multipliers. SAS INNOVATE 2024. The INTNX function returns the SAS date value for the beginning date, time, or datetime value of the interval that you specify in the start–from argument. You can create a SAS date value with the MDY function. %LET dateend=SYSDATE9; %LET newday=%SYSFUNC(INTNX ('day',"&dateend"d,-1)); I set the first macro variable called dateend to be the current date, then. ); The PUT function creates a character value. Customer Support SAS Documentation. SAS INTNX() is the function that needs parameters like Interval, start_date, and a number of intervals to be added for a specified date value. tricks and tips for using the system date and the SAS functions INTNX with interval dot notation and INTCK to programmatically produce formats for your dates. What's New in SAS 9. 4 and SAS® Viya® 3. date1 = month (date): Extracts the month component from the variable date. The form of an interval is. Analytics. I would like to set the macro variable called newday to be the previous day. Maxim 1: read the documentation. 4 / Viya 3. Once you convert the date, you can find the number of days between the two dates with the INTCK function, and then subset the table appropriately. SAS® Visual Data Mining and Machine Learning 8. SAS® Help Center. The form of the INTCK function is. You would not need to use the intck function to tell the days differnce, just use subtraction. Find more tutorials on the SAS Users YouTube channel . Statistical Procedures. So, once again, that explains the example above but not why there is a “2” preceding the date. The 5-digit results you see are correct, a SAS date is the number of days since Jan 1, 1960. com. INTCK Function. is a value that represents the number of days between January 1, 1960, and a specified date. This function uses the following basic syntax: INDEXC(source, excerpt) where: source: The string to analyze; excerpt: The string of characters to search for within source; The following example shows how to use this. Browsing the INTCK Documentation and Intervals Available to the Function, I would think that this gives me the number of 1 day week periods, considering Tuesday, Wednesday, Thursday, Friday, Saturday ans Sunday as weekend days = the number of Mondays. The function INTCK ('MONTH', '1feb2013'd, '31jan2013'd) returns –1 because the first date is in a later discrete interval than the second date. SAS is headed back to Vegas for an AI and analytics experience like no other! Whether you're an executive, manager, end user or SAS partner, SAS Innovate is designed for everyone on your team. The default is “DISCRETE” but you can specify if you want to use the “CONTINUOUS” method. Getting Started. INTDT Function. sas. INTNEST Function. When I use the intck function with the parameter 'weekday', I get the difference considering both Saturday and Sunday as weekend. Category:SAS is headed back to Vegas for an AI and analytics experience like no other! Whether you're an executive, manager, end user or SAS partner, SAS Innovate is designed for everyone on your team. Counting Time Intervals. 1. Thank you for quick respond. SAS is headed back to Vegas for an AI and analytics experience like no other! Whether you're an executive, manager, end user or SAS partner, SAS Innovate is. SAS® 9. Tables of Perl Regular Expression (PRX) Metacharacters. Work end time: 4pm. SAS® Help Center. Preparing and Analyzing Data. you can relatively reliably count the number of trading days between a couple of dates using the INTCK('weekday',. ) The following example shows how to determine the date of the start of the week that. The INTNX Syntax. is a character constant or variable that contains an interval name. The syntax is very similar to the INTNX function, INTCK(interval, from, increment, alignment). You need to apply a format to the date value so it displays properly. The first two arguments, start-date and end-date , are required. DATA dataset; set dataset; months_exact = intck ('months'. The INTCK function returns the number of intervals between two date values. values of some variable. If the value of argument is positive, the INT function has the same result as the FLOOR function. mmm. You will need some sort of calendar for this. Or target location of 'B'. data test; date=intck ("month",'01FEB2021'd,'31JAN2022'd,'c'); run; The SAS interval functions INTNX and INTCK perform calculations with date, datetime values, and time intervals. The INTNX function increments a date, time, or datetime value by intervals such as DAY, WEEK, QTR, and MINUTE, or a custom interval that you define. 以下のデータセットがあったとします。. calculating number of months between birthday and current date using following expression:You can use the INTCK function in SAS to quickly calculate the difference between two dates in SAS. SAS Forecasting and Econometrics. documentation. Time intervals can be specified in ‘MONTH’, ‘WEEK’, ‘QTR’, ‘YEAR’ etc. This is a longitudinal data and I need to retrieve the difference. SAS - Functions. If, say you have a variable fyend_month (fiscal year end month, with values 1 to 12. By using multipliers and shift indexes, you can create multiples of intervals and shift their starting point to construct more complex interval specifications. However, clearly this is not the case as NumMondays=4 in the code above. 1. SAS INNOVATE 2024. Examples:Method of Calculation for Day Count Basis (30/360) To calculate the number of days between two dates, use the following formula: N u m b e r o f d a y s = [ ( Y 2 - Y 1 ) * 3 6 0 ] + [ ( M 2 - M 1 ) * 3 0 ] + ( D 2 - D 1 ) Arguments. Any idea how to recreate SURV_MM for the dates with DEC31 that INTCK. INTCK( 'datetime-interval', datetime1, datetime2 <, 'method'>) returns the number of boundaries of intervals of the given kind that lie between the two date or datetime values. The INTCK function is one of the most important date function in SAS that is used to calculate the difference between two dates, two times or two datetime values. x=intnx ('week', '17oct03'd, 6); put x date9. The INTNX function increments dates by intervals. This is my code. Second your actual dates do not match the values you posted. The INTNX function advances the date or time values by a given interval and returns a date or time value. format writes SAS date values in the form ddmmmyy, ddmmmyyyy, or dd-mmm-yyyy, where. 1 Functions and CALL Routines: Reference documentation. Re: INTCK to compute minutes between dates. The form of an interval is. デフォルトのDISCRETEメソッドを使用するINTCK関数は、1番目の日付と2番目の日付の間に次の間隔の開始点が含まれる回数を数えます。. The COALESCE function checks the value of each argument in the order in which they are listed and returns the first non-missing value. If you intend to use a date literal it would. INTCK function Examples. If "to" is before "from", the function returns a negative value. The INTCK() function will count the number of boundaries crossed. The INT function returns the integer portion of the argument (truncates the decimal portion). When you use date and time intervals (for example, with the INTCK or INTNX functions), SAS bases its calculations on the calendar divisions that are present. The INTNX function helps you compute the date that is 308 days away in the future from a specific date. %SYSEVALF ( expression <, conversion-type >) expression. Re: Difference between quarters. Note that the INTCK function counts the number of times the beginning of an interval is reached in moving from the first date to the second. これ. SAS® Help Center. Depending on the type of function, the number of arguments it takes can vary. Please identify the non-numeric type data first and change it to numeric data type using format yymmdd8. com SAS® Help Center. I was wondering if any of the two methods below are appropriate and take care leap years as well. 2: DS2 Language Reference documentation. is a value that represents the number of days between January 1, 1960, and a specified date. It is worth to note that INTCK gives the time intervals passed between two dates as per the calendar. INTNX () is basically used to get the future or back dated date with a gap of given specific intervals like MONTH, WEEK, YEAR etc. YEAR - Given a number or a variable representing a date or datetime, returns the year. The format of column "log_date" is DATE9. INTCYCLE Function. documentation. INTCK function. Then try the intck function for the difference. As will be shown in this document, almost any operation that can be applied to a data set using SAS’s DATA step, can also be accomplished in pandas. INTCK Function. Use them with the INTCK and INTNX functions and with procedures that support numbered lists (such as the PLOT procedure). sas. Mathematical Optimization, Discrete-Event Simulation, and OR. e. The general form of an interval name is. You can use the INDEX function in SAS to return the position of the first occurrence of a string within another character string. Don't use INTCK(). Posted 08-31-2017 12:11 AM (7829 views) | In reply to EEEY. ; datalines; 188 18Jul17:15:27:00 97 188. In your first example 14Nov2021 to 24Jan2022, this crosses two month boundaries (1 Dec 2021 and 1 Jan 2022) so RESULT1 = 2. It does not count May 1, in your example. カスタマーサポート SAS ドキュメント. However, because it counts the number of months (thereby lumping together everyone born in a particular month), the decimal values produced by INTCK are not meaningful. create table MAY2019 as select * from some_table where date between '01MAY2019'd and '31MAY2019'd ; Second step is to replace the parts that change with macro variables. documentation. To start set the values manually. Calculation of individual's age : The INTCK function is used to calculate the number of years between date of birth and today's date. SAS Functions and CALL Routines by Category. 03 -5 15 0. 前回、intck関数とintervaldsのコンボを紹介したので、次はintnx関数とintervaldsのコンボをやろうと思うのですが、まずintnx関数を使ったことない方も多いと思うので、基本を紹介します。. Looks like your time stamp values are numeric variables with datetime values. If I wanted to extract the date data from column 'First_date' format DDMMYY from table 'table_X' and comparing it to a certain date to get the number of months between these 2 dates, with no decimals. (sas日付値とは1960年1月1日から数えた累積日数です。) 年齢の計算には、intck関数をご利用になると便利です。 intck関数は、二つのsas日付値の間に何回、年(又は月)を越すかを求めるものです。 下記の使用例をご参照ください。Example 3: Use INTNX to Find First Day of Month. SAS-date constants are a lot more understandable for us than tHat "number of days since 1960) There are hundreds of formats an informats to handle dates. Difference Between two dates using INTCK function in SAS: difference between two dates in days, weeks, months & year in SAS. INTCK( 'datetime-interval', datetime1, datetime2 <, 'method'>) returns the number of boundaries of intervals of the given kind that lie between the two date or datetime values. The INTCK() function counts the number of times that an interval boundary is crossed between two given dates. 1 関⁠数⁠と⁠C⁠A⁠L⁠L⁠ル⁠ー⁠チ⁠ン⁠: リ⁠フ⁠ァ⁠レ⁠ン⁠ス documentation. One will use SAS code like: age_months = floor ( (intck ('month',birthdate,vacine_date)- (day (vacine_date) < day (birthdate)))); Here's a sample program showing how to use it:I am guessing, but it seems as if your variable letter_date is not an actual SAS date value, it is some integer that looks like a date to humans but does not look like a date to SAS. Returns the number of interval boundaries of a given kind that lie between two dates, times, or datetime values. 11 from Combining and Modifying SAS Data Sets - Examples. BEGINNING (B) : returned date value is aligned to the beginning of the interval. 3 in decimal arithmetic. See the syntax, arguments, and examples of the INTCK function with real-world problems. A DataFrame in pandas is analogous to a SAS data set - a two-dimensional data source with labeled columns that can be of different types. @lmg wrote: Hello, I need have a cumulative sum of the next couple of weeks (dependent on a factor variable). Knowing how most people pronounce a string of characters. DATE () returns the current date as a SAS date value. Date functions such as intckand intnxhave the needed rules built in. proc setinit; run; And what's installed on your system using: proc product_status; run; The output will be in the log. This function uses the following basic syntax: INTCK(interval, start date, end data, method) where: interval: Interval to calculate (day, week, month, year, etc. com. intck(): 'day' for SAS date values, 'dtdate' for SAS datetime values. However, when SAS provides a function, most likely it is more efficient than code we would write, plus INTCK doesn't care whether the date variable is seconds, minutes hours, days, etc. Hi Experts, please help me to find a max and a min date value from 10 date fields (date1, date2, date3. Series #. The INTCK function in SAS returns the number of interval boundaries that lie between two SAS dates, times, or timestamp values. INTCK() calculates the number of date/time intervals between two dates (and/or times)Details. The INTCK function using the default discrete method counts the number of times the beginning of an interval is reached in moving from the first date to the second. sas. Since we are discussing the WEEKDAY function already, let’s look at. SAS is headed back to Vegas for an AI and analytics experience like no other! Whether you're an executive, manager, end user or SAS partner, SAS Innovate is designed for everyone on your team. The paper walks through creating a business day interval and working with intck and intnx to count and increment dates based on business days. When you use the LAGn function, you need to understand its nature. ; INTNX returns the value 23NOV2003. is a two-digit or. Sorted by: 2. data new; set test; nmonths=intck('month',assign_date,completed_date); run; proc print data=new; var assign_date completed_date nmonths; run;AGE=INT((INTCK('MONTH',DOB,refDate) - (DAY(refDate)<DAY(DOB)))/12); I stopped using it when I discovered that the calculation would sometimes produce odd results. INTCYCLE Function. )); /*Here we have a problem and we. As an example, most of the time, a calendar month is not exactly thirty days long,The INTCK function in SAS can calculate the difference between any two dates or datetime values, and return whatever interval you're looking for (days, minutes, hours, weeks, months). 1. For example, if the login recorded at the hospital is at the minutes level, which would correspond to most sign-ins I've done at a clinic, then INTCK(HOURS. is the first three letters of the month name. no_of_month=INTCK('month', first_date_dep, last_date_dep); so counting the number of months between the first date of deposit and last date of deposit. INTNX(interval, start date, increment <, alignment>). Mathematical Optimization, Discrete-Event Simulation, and OR. Date1: 09/02/2011. Since we are programming computers it's possible to program an exact solution that is almost always correct. intckは、スパンではなくデルタをカウントしますが、デルタとスパンの差は常に1です。 日付間隔と時間間隔の操作の詳細については、日付間隔と時間間隔を参照してください。 日付間隔と日時間隔. SAS can perform calculations on dates ranging from A. There are also two really helpful functions for date arithmetic . INTNX Function. SAS® 9. The function INTCK ('MONTH', '31jan2013'd, '1feb2013’d) returns 1, because the two dates lie in different months that are one month apart. Re: How to extract a timestamp with one hour interval. ) start date: The start date; end date: The end date The function INTCK ('MONTH', '1feb2021'd, '31jan2021'd) returns –1 because the first date is in a later discrete interval than the second date. The DATDIF function has a specific meaning in the securities industry, and the method of calculation is not the same as the actual day count method. intck('WEEKDAY', a. With the %LET statement, you can create a macro variable named &start_dt and &stop_dt.