We should add time zone option that let’s the user specify which timezone they’d like to use.
Things this could affect:
- We could have one time zone for parsing data and one used for formatting labels and tooltips (e.g. timestamps are provided in UTC, but you’d like to display in Eastern timezone)
- Also used when we’re calculating major ticks / auto-ticks and try to align to the start of a minute, day, hour, etc. But when the start of the day is depends on the time zone.
- In some cases we may be able to determine the timezone the user would like to use from the labels they’ve specified (e.g.
- Unit tests are currently flaky because they depend on the timezone they’re being run in
We would either need library support or would need to implement ourselves. In either case I think we should use Intl.DateTimeFormat APIs. We already get lots of complaints about the size of Moment.js (#4303) and
moment-timezone is even larger, so I think we should avoid using it.