Discovered when I ran my script to run pcal and refresh my next-month calendar, and got March. mwilson@ningabel:~$ date Tue 30 Jan 2024 04:23:27 PM EST mwilson@ningabel:~$ date -d'this month' +%m 01 mwilson@ningabel:~$ date -d'next month' +%m 03 mwilson@ningabel:~$ which date /usr/bin/date mwilson@ningabel:~$ date --version date (GNU coreutils) 9.1 Copyright (C) 2022 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Written by David MacKenzie. mwilson@ningabel:~$ Running Debian 12.2.0-14 patched up to last Friday. I suppose that in a couple of days next month really will be March, and the bug will be gone.