System.SysUtils.MinDateTime
Delphi
MinDateTime: TDateTime = -657434.0; { 01/01/0100 12:00:00.000 AM }
C++
extern DELPHI_PACKAGE System::TDateTime MinDateTime;
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
const variable |
public | System.SysUtils.pas System.SysUtils.hpp |
System.SysUtils | System.SysUtils |
Description
Specifies the earliest supported TDateTime value.
MinDateTime is the most historic date: 01/01/0100 00:00:00.000 that the TDateTime type supports. The actual shown value of -657434.0 reflects the fact that TDateTime is actually a floating point number, rather than a structured type. The mantissa holds the number of days relative to 12/30/1899 00:00:00.000; the exponent holds a fraction of a day.
Note: The fractional part of TDateTime is always treated in a positive sense. It always means the elapsed part of a day; if TDateTime value is negative, this refers only to a negative offset of the integral day value from 12/30/1899.