Use keyboard arrows and set a time and date result: (Tue Dec 14 2021 01:01:00 GMT+0100 (sentraleuropeisk normaltid)).
Do the same thing but clear input field first, for example with CTRL-a + backspace or delete. Year is now 1980 (Tue Jan 01 1980 02:02:00 GMT+0100 (sentraleuropeisk normaltid))