Original code from http://d.hatena.ne.jp/zyxwv/20090118/1232270018

utc2jst.py

import datetime
import os

def utc2jst(utc_in_twitter_format):
    utc = (datetime.datetime.
        strptime(utc_in_twitter_format, '%a %b %d %H:%M:%S +0000 %Y'))
    td = datetime.timedelta(hours=9) # JST is 9 hours later than UTC
    return utc+td

jst = os.environ.get("UTC")
print(utc2jst(jst))