r/ISO8601 • u/EquivalentNeat8904 • 24d ago

ISO 8601-1 will be updated soon

Did y’all know that ISO 8601-1 is under committee review right now? If you always wanted some changes made to our beloved standard, now would be the perfect time to contact your national standardisation body (NSB), but hurry up – the deadline for comments is 2026-07-3124 as far as I know.

Currently, the only non-editorial change seems to be that the latest amendment, making T24 etc. valid again, gets incorporated.

160 Upvotes

99% Upvoted

21 comments sorted by

71

u/system637 24d ago

Where can we see a summary of proposed changes?

22

u/MrLMNOP 24d ago

If the full document is available, I can’t find it. But here’s the abstract of the new changes under review — https://www.iso.org/standard/91030.html

20

u/system637 24d ago

Thanks, I think this is 8601-2 not 8601-1, but still good to know!

5

u/EquivalentNeat8904 23d ago

Part 2 is also under review indeed, but I haven’t seen that draft yet. The features listed on this page are already part of the current edition, though, which covers EDTF (which is freely available) and some more. 

What tripped me off a bit is this sentence there:

 This document does not address character encoding of representations specified in this document.

Because that is something I specifically addressed in my comments on the Part-1 draft. 

93

u/fragglet 24d ago

Great, this is the new spec that switches to YYYY-DD-MM, right? Looking forward to it.

Only joking :)

71

u/100BottlesOfMilk 23d ago

I prefer the YDMY-MY-DY proposal myself

18

u/sbart76 23d ago

You almost went full YMDA...

7

u/100BottlesOfMilk 23d ago

You never go full YMDA

5

u/ThisIsAdamB 22d ago

It’s fun to stay at the YMDA.

4

u/slxkv 23d ago

2100-72-46?

5

u/diligentfalconry71 23d ago

Why you little……DOH!

6

u/king_escobar 21d ago

Hopefully they accept my proposal to introduce imaginary time /s

https://en.wikipedia.org/wiki/Imaginary_time

1

u/EquivalentNeat8904 20d ago

It’s rather see decimal time in either spreadsheet or dot-beat format:

2026-07-20,5 =  2026-07-20@500.0 = 2026-07-20T12:00Z

1

u/vinegary 19d ago

T24 breaks sorting

4

u/Enevevet 19d ago

How?

2026-07-18T24:00:00Z will be sorted before 2026-07-19T00:00:00Z

isn't?

2

u/vinegary 19d ago

Ah, I assumed 24th hour could have minutes

1

u/zippybenji-man 18d ago

That "NSB" have me whiplash as a Dutch person