TDateTime data type is used to store date-and-time information. Actually, it is a floating-point data type that is interpreted in a special way.
The integer part of the
TDateTime value is called “date portion”, it denotes the number of days that have passed since 12/30/1899. The fractional part of the value is called “time portion”, it denotes a part of a 24 hour day that has elapsed.
Below are several examples of
TDateTime values and their descriptions:
|0.0||12/30/1899 12:00 AM|
|-45103.0||7/4/1776 12:00 AM|
|38902.0||7/4/2006 12:00 AM|
|36526.125||1/1/2000 3:00 AM|
|36519.5||12/25/1999 12:00 PM|
|38214.770833333333333||8/15/2004 6:30 PM|
|-148732.875||10/12/1492 9:00 PM|
There are no
TDateTime value between 0 and -1.