Use the today() function and format the cell to display as a date
Note: this will update every time you recalculate the sheet. If you want a
static date, select the cell where you want it to display and press Ctrl-;
(control and semicolon)
(from previous reply by Duke Carey to a similar posting today )
you can use formula =NOW() in a cell. If you want date displayed in specific
format, then just format the cell as you want (for example mm/dd/yyyy,
dd.mm.yyyy h:mm to display also time...).