| [Overview][Constants][Procedures and functions][Index] | 
Return the previous day.
Source position: dateutil.inc line 110
| function Yesterday: TDateTime; | 
Previous day as TDateTime.
Yesterday returns yesterday's date. Yesterday is determined from the system clock, i.e. it is Today -1.
| 
 | Return the current date | |
| 
 | Return the next day | 
Program Example18; { This program demonstrates the Yesterday function } Uses SysUtils,DateUtils; Begin Writeln(FormatDateTime('"Today is " dd mmmm yyyy',Today)); Writeln(FormatDateTime('"Yesterday was " dd mmmm yyyy',Yesterday)); End.