转换为本地时区会在不同机器上产生不同的值

Question

I am storing few tweets in mongodb in UTC format and converting utc time specified in tweets to local time zone in my local machine it renders correctly in local machine but not in my server.

Storing

        #d is the tweet

        created_at = d['created_at']
        dt = datetime.datetime.strptime(created_at,\
                 "%a %b %d %H:%M:%S +0000 %Y")
        dt = dt.replace(second = 0, minute=0)
        db.collection({'created_at': dt})

Conversion

here = tz.tzlocal('Asia/Colombo')
utc = tz.gettz('UTC')
for index, item in enumerate(items):
    ist = item['created_at'].replace(tzinfo=utc).astimezone(here)
    ist_readable = ist.replace(minute =0, second = 0).ctime()
    items[index]['created_at'] = ist_readable
return items

Output

Thu Apr 19 04:00:00 2012
Thu Apr 19 03:00:00 2012

Output in Local Machine

Thu Apr 19 09:00:00 2012 
Thu Apr 19 08:00:00 2012 

Local machine time zone is set to 'IST', server time zone is set to 'UTC'.

Answer 1

here = tz.gettz('Asia/Colombo')