History

Ean Milligan (Bastion) 50aa8d204c Add TZ consts Add all valid tz abbrs and the scripts that generated it		2023-03-23 02:30:51 -04:00
..
README.md	Add TZ consts	2023-03-23 02:30:51 -04:00
generateUpdatedTZList.ts	Add TZ consts	2023-03-23 02:30:51 -04:00
tzTable.csv	Add TZ consts	2023-03-23 02:30:51 -04:00

README.md

TZ Data

Since the JS/TS Date implementation does not handle shorthand timezones, we must implement our own solution.

Data Source

https://en.wikipedia.org/wiki/List_of_tz_database_time_zones?useskin=vector

How to use this submodule

Simply point Excel to the link above and tell it to rip the List data table. Then, pull the four columns listed below into a separate table and save as a CSV without headers.

UTC offset STD
UTC offset DST
Time Zone abbreviation STD
Time Zone abbreviation DST

Drop that CSV into this directory under the name tzTable.csv and run deno run --allow-read=./tzTable.csv ./generateUpdatedTZList.ts

Why not have this built directly into Group Up?

This is implemented as a submodule so that there is some manual screening required to verify things do not get parsed wrong due to a bad Excel/Wikipedia export. This also may require tweaks if any formats change in Wikipedia.

Current quirks

Most, if not all, - signs copied out as ?. Don't ask me how or why, it just happened. The script fixes this.
Due to doubled TZ abbrs, there is an overrides section. This should be cleared out when tzTable.csv is updated.