undefined | Better HN

0 pointsAprilArcus4y ago0 comments

My intuition is that a "date" is a bounded range of times 24 hours long. So we should speak about dates containing times, or dates subsetting, supersetting, or intersecting other time ranges.

0 comments

verve_rat4y ago

Um, add in a daylight savings transition and that "date" could be 23 or 25 hours long.

And that is not even getting into what a day means when you are trying to coordinate between NZ and the UK.

Izkata4y ago

To really get confusing, let's add in leap seconds. They're added "as needed" and it looks like our most recent one was in 2016.

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

AprilArcusOP4y ago

Good point! ISO 8601 dates should support timezones. Then a 24-hour "date" could only be in one of standard time or daylight time.

j / k navigate · click thread line to collapse