Why specify a UTC offset instead of using zoneinfo.ZoneInfo?

[msoulier]

At the moment the PrayerConf object takes a timezone argument, which is a simple integer representing utc offset in hours.

This cannot work everywhere unless it is a float, as some regions have offsets that are not in hours.

Python provides a zoneinfo library to make selecting a timezone easier. The PrayerConf object could take one of these instead and still work internally in the same way.

`>>> zone = zoneinfo.ZoneInfo("America/Montreal")

import datetime
zone.utcoffset(datetime.datetime.now()).total_seconds
<built-in method total_seconds of datetime.timedelta object at 0x7f88fcbbd410>
zone.utcoffset(datetime.datetime.now()).total_seconds()
-14400.0
zone.utcoffset(datetime.datetime.now()).total_seconds() / 3600.0
-4.0`

And on my Linux box, it is simple enough to read the symlink /etc/localtime and determine this for the user.

$ ls -l /etc/localtime lrwxrwxrwx 1 root root 35 May 2 2023 /etc/localtime -> /usr/share/zoneinfo/America/Toronto

So why not make this simpler for the front-end and use the zoneinfo library?

Regards...