Below is a list of the user defined functions for catagory: Date Management.
Click on a user defined function name for a detailed description.
| User Defined Function | Description |
| _DateAdd | Calculates a new date based on a given date and add an interval. |
| _DateDayOfWeek | Returns the name of the weekday, based on the specified day. |
| _DateDaysInMonth | Returns the number of days in a month, based on the specified month and year. |
| _DateDiff | Returns the difference between 2 dates, expressed in the type requested. |
| _DateIsLeapYear | Checks a given year to see if it is a leap year. |
| _DateIsValid | Checks the given date to determine if it is a valid date. |
| _DateTimeFormat | Returns the date in the PC's regional settings format. |
| _DateTimeSplit | Split a string containing Date and Time into two separate Arrays. |
| _DateToDayOfWeek | Returns the weekdaynumber for a given date. |
| _DateToDayOfWeekISO | Returns the ISO weekdaynumber for a given date. |
| _DateToDayValue | Returns the daynumber since since noon 4713 BC January 1 for a given Gregorian date. |
| _DayValueToDate | Add the given days since noon 4713 BC January 1 and returns the Gregorian date. |
| _Now | Returns the current Date and Time in PC's format. |
| _NowCalc | Returns the current Date and Time in format YYYY/MM/DD HH:MM:SS for use in date calculations. |
| _NowCalcDate | Returns the current Date in format YYYY/MM/DD. |
| _NowDate | Returns the current Date in the Pc's format. |
| _NowTime | Returns the current Time in requested format. |
| _SetDate | Sets the current date of the system |
| _SetTime | Sets the current time of the system |
| _TicksToTime | Converts the specified tick amount to hours, minutes, and seconds. |
| _TimeToTicks | Converts the specified hours, minutes, and seconds to ticks. |
| _WeekNumberISO | Calculate the weeknumber of a given date. |