Changing a unix timestamp to a different timezone

Question

I retrieve a unix timestamp from a web service in a Python program. This timestamp is in a USA timezone. In order to insert it in a MySQL database with other objects, locali

Answer 1

I had a similar problem in the past when the timestamps of the files we downloaded from a service provider had timestamps corresponding to the PST time zone. The following helped me do to the conversion:

import pytz, datetime, time
import os

originalTimeStamp = os.stat("/tmp/file-from-us-west-coast").st_mtime

# prints e.g. 2010-03-31 13:01:18
print "original:",datetime.datetime.fromtimestamp(originalTimeStamp)

# re-interpret 
originalTimeZone = "America/Los_Angeles"
targetTimeZone   = "Europe/Paris"

newTimeStamp = pytz.timezone(originalTimeZone).localize(datetime.datetime.fromtimestamp(originalTimeStamp)).astimezone(pytz.timezone(targetTimeZone))

# prints e.g. 2010-03-31 22:01:18+02:00
print "new:     ",newTimeStamp

# convert back to seconds since epoch
newTimeStamp = time.mktime(newTimeStamp.timetuple())

# print time difference in hours
print (newTimeStamp - originalTimeStamp) / 3600.0