Brian Inglis via tz <tz@iana.org> wrote on Wed, 2 Jun 2021 at 13:10:34 EDT in <974cf8e1-c2d8-36bf-ec10-8e99ec826956@SystematicSw.ab.ca>:
It can be useful to tag (touch) (scans of) historical or official documents, pictures, media with real timestamps corresponding to the date issued, taken, or expired, as well as location, and time zone info. The current range covered by GNU date:
@-67768040609740800 -2147481748 Jan 01 Mon 00:00:00 @67767976233532799 2147483647 Dec 31 Tue 23:59:59
That range isn't part of GNU date, I don't think. Under OS X, I get a different result. For the negative bound: pb3:xj2 jhawk$ gdate --version date (GNU coreutils) 8.30 ... pb3:xj2 jhawk$ gdate -d @-67768040609722801 gdate: time ‘-67768040609722801’ is out of range pb3:xj2 jhawk$ gdate -d @-67768040609722800 Thu Jan 1 00:00:00 EST -2147481748 pb3:xj2 jhawk$ Not that this matters critically. -- jhawk@alum.mit.edu John Hawkinson +1 617 797 0250