Time everywhere in UI should be 24h

[hmpf]

Is this 24h time?

How are you supposed to create a duration that is 24h.

[jorgenbele]

The start of day and end of day is defined in the backend here: https://github.com/Uninett/Argus/blob/1bcee6aaeb2e04f2e26b394d349f49bc2a510422/src/aas/notificationprofile/models.py#L61

https://github.com/Uninett/Argus/blob/1bcee6aaeb2e04f2e26b394d349f49bc2a510422/src/aas/notificationprofile/models.py#L60-L62

class TimeInterval(models.Model):
    DAY_START = time.min
    DAY_END = time.max

where time is imported from datetime here:
https://github.com/Uninett/Argus/blob/1bcee6aaeb2e04f2e26b394d349f49bc2a510422/src/aas/notificationprofile/models.py#L2

from datetime import datetime, time

Evaluating time.min and time.max in the python interpreter gives the following:

datetime.time(0, 0)
datetime.time(23, 59, 59, 999999)

I'm not really sure how this could be solved in the frontend. It could be solved by handling a special case of 00:00 (AM/PM), or by making the range: start <= x < round_up(end) such that 11:59 includes 11:59:59:9999.

In addition, what about timezones? I cannot see a way to set timezone, so how does it determine one?
EDIT: The backend handles timezones at the same time that it checks if it's within the time interval: https://github.com/Uninett/Argus/blob/1bcee6aaeb2e04f2e26b394d349f49bc2a510422/src/aas/notificationprofile/models.py#L95-L100, by getting the server timezone.

[hmpf]

There might be a checkbox with "All day"?

[hmpf]

How dates and times and timezones are shown differs between browsers and browser versions. Some use CLDR. Some use OS locales. Some you can set time and date formats in the setinngs, independently. It's a bit like the old difficulty with getting firefox to use A4, messy and unpredictable, which is why it is nice UX to allow people to control it themselves and not rely on the browser/os/moon phase.