Comment by hudsonja
Timezones just give you a set of rules to determine a cultural description of a given point in time. How is timezone any more or less relevant to a future vs. past event?
Timezones just give you a set of rules to determine a cultural description of a given point in time. How is timezone any more or less relevant to a future vs. past event?
The cultural rules tend to be more important when describing future events, where the “human friendly” description is what really defines it.
When describing past events, it’s often most precise to describe the literal universe time that it happened.
Obviously these are just generalities, whether you choose one strategy or another depends on the specific use case.
Units of time can also change. It's possible that a day of 10 hours of 100 minutes could be legislated. Not likely, but possible.
As I said, because time zone definitions change.
If daylight savings time gets cancelled by legislation, then the event happening at noon two summers from now, you will still probably want to happen at noon -- the new noon.
But changes to timezones don't apply retroactively. At least not in this universe!