pytz

Possible Duplicate: Python datetime object show wrong timezone offset import pytz, datetime pytz.timezone("Asia/Calcutta") prints the following: < DstTzInfo 'Asia/Calcutta' HMT+5:53:00 STD > Why it is not 05:30 hrs? I am in timezone America/Los_Angeles. Time zones change over the years. According to http://www.prokerala.com/travel/timezones/Asia/Kolkata?mode=history the original offset for that zone was 5.88888888889 hours, or 5 hours 53 minutes. pytz will use the proper offset and nomenclature once you assign the zone to an actual date. >>> tz = pytz.timezone("Asia/Calcutta") >>> tz

How would I get my python script to check whether or not a specific timezone that is stored in a variable using DST right now? My server is set to UTC. So I have say for instance zonename = Pacific/Wallis I want to run the query about if it is using DST right now and have the reply come back as either true of false. from pytz import timezone from datetime import datetime zonename = "Pacific/Wallis" now = datetime.now(tz=timezone(zonename)) dst_timedelta = now.dst() ### dst_timedelta is offset to the winter time, ### thus timedelta(0) for winter time and timedelta(0, 3600) for DST; ### it

I have a datetime in utc time zone, for example: utc_time = datetime.datetime.utcnow() And a pytz timezone object: tz = timezone('America/St_Johns') What is the proper way to convert utc_time to the given timezone? Tzach I think I got it: pytz.utc.localize(utc_time, is_dst=None).astimezone(tz) This line first converts the naive (time zone unaware) utc_time datetime object to a datetime object that contains a timezone (UTC). Then it uses the astimezone function to adjust the time according to the requested time zone. May I recommend to use arrow ? If I understood the question: >>> import arrow

I have a date and I need to make it time zone aware. local_tz = timezone('Asia/Tokyo') start_date = '2012-09-27' start_date = datetime.strptime(start_date, "%Y-%m-%d") start_date = start_date.astimezone(local_tz) now_utc = datetime.now(timezone('UTC')) local_now = now_utc.astimezone(local_tz) I need to find if this is true: print start_date>local_now But I get this error. start_date = start_date.astimezone(local_tz) ValueError: astimezone() cannot be applied to a naive datetime I convert utc to tokyo with no issue. I need to make start_date timezone aware ad well in tokyo. Thanks For pytz

Is it possible to get the DST boundaries of a given timezone with pytz? It doesn't seem to be officially supported. However, you can poke at the internals of a DstTzInfo object and get it from there: >>> from pytz import timezone >>> tz = timezone('Europe/London') >>> tz._utc_transition_times [datetime.datetime(1, 1, 1, 0, 0), datetime.datetime(1916, 5, 21, 2, 0), ... datetime.datetime(2036, 3, 30, 1, 0), datetime.datetime(2036, 10, 26, 1, 0), datetime.datetime(2037, 3, 29, 1, 0), datetime.datetime(2037, 10, 25, 1, 0)] Each entry corresponds to an entry in _transition_info : >>> tz._transition