tz name? Sounds super brittle to me when looking at history.
So what happens when a timezone name changes?
Say Manila timezone changes names to New Beijing timezone in the next 10 years (fictive example)?
So what happens when a timezone name changes?
Say Manila timezone changes names to New Beijing timezone in the next 10 years (fictive example)?
If the 'Asia/Manila' timezone changes to the 'Asia/Shanghai' timezone, the old timezone will still exist, but a rule will be added to indicate the change.
The tz name here is a specific name in the tzdata database, so it's quite easy for that database to never remove any entries, but to rather deprecate them or link them to new ones, if appropriate.