OLE Automation Date
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| − | '''OLE Automation Date''' is one of the date/time formats used with Microsoft's ''OLE Automation'' API. It | + | '''OLE Automation Date''' is one of the date/time formats used with Microsoft's ''OLE Automation'' API. It is used in some [[OLE Property Set]]s, for example. |
| − | It is also | + | It is also known as '''OLEAUT date''', '''VARIANT DATE''', '''variant time''', '''VT_DATE''', etc. |
== Format details == | == Format details == | ||
Latest revision as of 14:38, 27 July 2018
OLE Automation Date is one of the date/time formats used with Microsoft's OLE Automation API. It is used in some OLE Property Sets, for example.
It is also known as OLEAUT date, VARIANT DATE, variant time, VT_DATE, etc.
[edit] Format details
It is in the form of an 8-byte floating point number.
Positive values correspond to the number of days (including fractions of a day) since "midnight 1899-12-30". Apparently this means the midnight at the beginning of 1899-12-30, i.e. 48 hours before the beginning of the year 1900.
Negative values are interpreted in a more complex way.
The valid range is usually considered to be the years 100 through 9999.
Times are usually treated as being in local time.
