Saving/restoring local aware time as naive utc to/from DB

exper.py

    # timezones
    tz_utc = pytz.utc
    tz_ua = pytz.timezone('Europe/Kiev')
    # get aware ukraine time
    time_ua = datetime.now(tz_ua)
    print "Aware ukraine time:", time_ua
    # transform to utc
    time_utc = time_ua.astimezone(tz_utc)
    print "Aware utc time:", time_utc
    # make naive
    time_utc_naive = time_utc.replace(tzinfo=None)
    print "Naive utc time:", time_utc_naive
    # ...save to db... ...restore from db...
    # restore aware utc from naive utc
    time_utc_restored = time_utc_naive.replace(tzinfo=tz_utc)
    print "Aware utc time:", time_utc_restored
    # restore aware ukraine time from utc
    time_ua_restored = time_utc_restored.astimezone(tz_ua)
    print "Aware ukraine time:", time_ua_restored