UTC Timezone Diff

utc_tz_diff.py

from datetime import datetime

from pytz import UTC
from pytz import timezone


def utc_tz_diff(tz):
    diff = (t1 := UTC.localize(now := datetime.utcnow())) - (t2 := timezone(tz).localize(now).astimezone(UTC))
    return f"{'+' if t1 > t2 else '-'}{diff.seconds // 3600:02}:{diff.seconds // 60 % 60:02}" if diff.seconds else "Z"


DATETIME_FORMAT = f"%Y-%m-%dT%H:%M:%S{utc_tz_diff(TIME_ZONE)}"