Nostr Web Client

Wtf? I just learned that there's a one-hour interval every year that simply cannot be represented when daylight savings time ends (in regions that respect it) when using RFC 5545 iCalendar / ISO 8601 format if you want to specify a time zone identifier. This is the format that Google Calendar and most calendar apps follow.

The only way around the issue is to use numerical time zone offsets (which in itself can be error prone due to the need to understand daylight savings and does not conform to the iCalendar spec).

I'm working on NIP-52 calendar events, debating between using Unix timestamps and following the iCalendar format for maximum interoperability. The fact that there's a meaningful interval of time that can't be represented in the latter format seals deal for me, unless I'm missing something. That's pretty messed up.

https://github.com/nostr-protocol/nips/pull/597#issuecomment-1633433118

ᴛʜᴇ ᴅᴇᴀᴛʜ ᴏꜰ ᴍʟᴇᴋᴜ 6mo ago

yeah i had fun with that one. i wrote a little tool that generates a complete timezones and offsets and start-end from a data source... let me see if i can dig it up to help

https://github.com/mleku/timelanguage

this already has mostly current data on it. you need to run the "generator.go" function in the "data" directory after deleting the two json files in there to make it regenerate. takes a minute or two for it to do it.

the languages are also part of the locale data, and includes currencies and phone codes and iso country codes and all that.

it actually generates a plain one with just the time zones data

the offsets are in seconds, and the start/end for places with DST are unix timestamps of the current next start/end

i hope it helps. you can use it as is but i recommend you write some script to make it regenerate it every 3 months or so because who knows what the fuck governments are gonna do in that time lol

Reply to this note

Please Login to reply.

Discussion

ᴛʜᴇ ᴅᴇᴀᴛʜ ᴏꜰ ᴍʟᴇᴋᴜ 6mo ago

i should probably make a little web service that maintains these updating every few months and hosting the output json files for people to use. if someone wants to zap me some i'll do it (and the app will be open source so you can run it yourself). hit me up