I don’t know about Conky, but I wanted to make sure you are aware that there is a Linux package with all the DST information, tzdata. So, you can query that for all your time zone information (including DST transitions)
Timezones and DST are set by the respective countries so it’s possible for them to change. IANA directly maintains tzdata so if there are any changes the update should come quickly, but you would need to be aware to go and get it.
I don’t know about Conky, but I wanted to make sure you are aware that there is a Linux package with all the DST information, tzdata. So, you can query that for all your time zone information (including DST transitions)
https://samanpavel.medium.com/time-zones-tz-database-and-linux-8dd9d451caa4
Timezones and DST are set by the respective countries so it’s possible for them to change. IANA directly maintains tzdata so if there are any changes the update should come quickly, but you would need to be aware to go and get it.