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DateTimeValid (Function) In french: DateHeureValide Checks the validity of a date/time between January 01, 0001 at 0 hours 0 minutes 0 seconds 0 hundredths of a second and December 31, 9999 at 23 hours 59 minutes 59 seconds 99 hundredths of a second. Res = DateTimeValid("2001122523122222")
Res = DateTimeValid("200125122312")
Res = DateTimeValid("200123")
Res = DateTimeValid("1482122524")
Syntax
<Result> = DateTimeValid(<Date/Time>)
<Result>: Boolean - True if the date/time is valid.
- False otherwise. A DateTime is considered invalid if:
- "MM" is not between "01" and "12".
- "DD" is not between "01" and "30", "01" and "31", "01" and "28" or "01" and "29" (according to the specified month).
- The date is between October 5, 1582, and October 14, 1582, inclusive. In fact, the calendar change took place during the night of October 4 to October 15, 1582 (Gregorian calendar adjustment: see notes).
- "HH" is not between "00" and "23".
- "mm" is not between "00" and "59".
- "SS" is not between "00" and "59".
- "CC" is not between "00" and "99" (or "CCC" is not between "00" and "999").
<Date/Time>: Character string or DateTime variable Character string in YYYYMMDDHHmmSSCC format (YYYY corresponds to the year, MM to the month, DD to the day, HH to hours, mm to minutes, SS to seconds and CC to hundredths of a second (use CCC for thousandths of a second)). Remarks Valid dates/times - If the date/time is before October 4, 1582, it belongs to the Julian calendar. In this case, the date/time is valid.
- If the date/time is after October 15, 1582, it belongs to the Gregorian calendar. In this case, the date/time is valid.
- A year is a leap year if it is divisible by 4 but is not a multiple of 100. However, if this year is multiple of 400, then it is a leap year. For other years, DateTimeValid returns False for February 29.
Tip: To enter a date/time in the correct format, use a Date type edit control and select or define an edit mask containing the date and time (e.g. "DD/MM/YYYY HH:mm:SS"). In this case, the validity of the date/time is automatically checked. - The date storage format allows you to store dates from 01/01/0001 to 12/31/9999.
Business / UI classification: Neutral code
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