23 lines
1.2 KiB
Markdown
23 lines
1.2 KiB
Markdown
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# TZ Data
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Since the JS/TS Date implementation does not handle shorthand timezones, we must implement our own solution.
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## Data Source
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https://en.wikipedia.org/wiki/List_of_tz_database_time_zones?useskin=vector
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## How to use this submodule
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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.
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- UTC offset STD
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- UTC offset DST
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- Time Zone abbreviation STD
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- Time Zone abbreviation DST
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Drop that CSV into this directory under the name `tzTable.csv` and run `deno run --allow-read=./tzTable.csv ./generateUpdatedTZList.ts`
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## Why not have this built directly into Group Up?
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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.
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## Current quirks
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- Most, if not all, `-` signs copied out as `?`. Don't ask me how or why, it just happened. The script fixes this.
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- Due to doubled TZ abbrs, there is an overrides section. This should be cleared out when `tzTable.csv` is updated.
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