(Engine-Level Function)
| Description: | Returns the number of days since January 1, 1970 for a given date. |
| Returns: | Numeric |
Usage:  |
Script or steady state. |
| Function Groups: | Time and Date |
| Related to: | Date | Day | Month | Today | Year |
| Format: |
DateNum(Day, Month, Year) |
| Parameters: |
| Day |
| Required. Any numeric expression giving the day of the month for the date. |
| Month |
| Required. Any numeric expression giving the month number for the date. January is month 1. |
| Year |
| Required. Any numeric expression giving the year of the date. The full four-digit date must be used. |
| Comments: | This function performs the inverse function to the Day, Month, and Year functions. No checks are done to verify that the parameters are in a valid range. |
Example:
NumDays = DateNum(14, 11, 1986);
NumDays is set to 6161, which is the number of days between 1 January 1970 and 14 November 1986.
