On 2025-03-11 10:14, Chris Brown via tz wrote:
the Eire (GMT+1) and Europe/Dublin (GMT+1) time zones need to be GMT+0, however, they are GMT+1.
Are there any standard troubleshooting tips I can pass along to our developers?
They can try running this shell command: $ TZ=Europe/Dublin date Tue Mar 11 17:41:17 GMT 2025 The second line is the output I get on my system (Ubuntu 24.10), and it's GMT which is correct. If they want something fancier they can run this to show this year's transitions: $ zdump -V -c 2025,2026 Europe/Dublin Europe/Dublin Sun Mar 30 00:59:59 2025 UT = Sun Mar 30 00:59:59 2025 GMT isdst=0 gmtoff=0 Europe/Dublin Sun Mar 30 01:00:00 2025 UT = Sun Mar 30 02:00:00 2025 IST isdst=1 gmtoff=3600 Europe/Dublin Sun Oct 26 00:59:59 2025 UT = Sun Oct 26 01:59:59 2025 IST isdst=1 gmtoff=3600 Europe/Dublin Sun Oct 26 01:00:00 2025 UT = Sun Oct 26 01:00:00 2025 GMT isdst=0 gmtoff=0 If these shell commands work but the software in question doesn't, the problem lies somewhere outside the TZDB installation and the C library.