Date Format Debate

The cluster centers on debates over date formats, with strong advocacy for the unambiguous ISO 8601 (YYYY-MM-DD) standard over regional variants like MM/DD/YYYY and DD/MM/YYYY that cause international confusion.

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20
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5
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#6528
Topic ID

Activity Over Time

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Keywords

e.g FF US ATO MM mozilla.org MMDDYYYY twitter.com YY goo.gl dd mm format date iso month dates oct 28 year

Sample Comments

steve1977 • Apr 17, 2023 • View on HN

There is only one date format, ISO 8601 (YYYY-MM-DD). Everything else is just a mistake that hasn’t been corrected yet ;)

interfixus • Aug 10, 2018 • View on HN

Or YYYY-MM-DD as a few of us obsessive smallendians keep insisting.

vzaliva • Mar 14, 2021 • View on HN

The date in stipid US standard (mm/dd/yyyy) will confuse the hell of the rest of the world. Please use not US-centric ISO date format: yyyy-mm-dd.

Benanov • Feb 21, 2025 • View on HN

YYYY-MM-DD should aggravate everyone equally, switch to that

beeboobaa3 • May 21, 2024 • View on HN

What's weird about the most common date format in the world, dd-mm-yyyy?

detaro • Nov 24, 2021 • View on HN

You see YYYY-MM-DD sometimes, but that's clearly not confusable.

xigoi • Aug 12, 2022 • View on HN

I know that Americans use MM/DD/YYYY. But YYYY-DD-MM???

MattBearman • Dec 13, 2014 • View on HN

Unless you're from one of the many countries that uses the more logical format of DD-MM-YY :P

bryanlarsen • Jan 31, 2024 • View on HN

Some languages pronounce the date as year, day, month so some people write YYYY/DD/MM. Since both YYYY/DD/MM and YYYY/MM/DD make sense to different people, neither should be used.

philliphaydon • Mar 12, 2018 • View on HN

It’s yyyy-mm-dd not yyyy-dd-mm....