Programming

26234 readers

652 users here now

Welcome to the main community in programming.dev! Feel free to post anything relating to programming here!

Cross posting is strongly encouraged in the instance. If you feel your post or another person's post makes sense in another community cross post into it.

Hope you enjoy the instance!

Rules

Follow the programming.dev instance rules
Keep content related to programming in some way
If you're posting long videos try to add in some form of tldr for those who don't want to watch videos

Wormhole

Follow the wormhole through a path of communities !webdev@programming.dev

founded 2 years ago

MODERATORS

snowe@programming.dev

Ategon@programming.dev

UlrikHD@programming.dev

bugsmith@programming.dev

Spyro@programming.dev

122

January 1st is not always on the first week of the year (www.jpvalencia.com)

submitted 2 days ago by null4141@programming.dev to c/programming@programming.dev

42 comments fedilink hide all child comments

The other day at work I stumbled upon this bug and thought it was worth to write a blog post about. Spoiler: It has nothing to do with timezones!

TLDR: According to ISO standard 8601 (which is what Python's date.isocalendar().week uses for example), the first week of the year is the week with the first Thursday of the year. So sometimes the first few days of January belong to the last week of previous year, and sometimes the last few days of December belong to the first week of next year :D

you are viewing a single comment's thread
view the rest of the comments

[–] sukhmel@programming.dev 1 points 1 day ago (1 children)

Yeah, but when days are 1-indexed and month are 0-indexed you just feel it's a very JavaScript thing to do

[–] locuester@lemmy.zip 2 points 23 hours ago

Yeah absolutely. I’m not disagreeing or saying it’s good.

I’m just correcting the strange wording.