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DATETIMEVALUE
Returns a year, month, day, and GMT time value.
Use
DATETIMEVALUE(expression) and replace
expression with a date/time or text value, merge field, or expression.
Tips
- DATETIMEVALUE is always calculated using GMT time zone and can’t be changed.
- When entering a specific date, surround the date with quotes and use the following format: YYYY-MM-DD, that is, a four-digit year, two-digit month, and two-digit day.
- If the expression doesn't match valid date ranges, such as the MM isn't between 01 and 12, the formula field displays #ERROR!
DATETIMEVALUE(ClosedDate) displays a date field based on
the value of the Date/Time Closed field.
DATETIMEVALUE("2005-11-15 17:00:00") returns November
15, 2005 5:00 PM GMT as a date and time value.

