from datetime import datetime
from pytz import timezone
from babel.dates import format_time
import pytz

FORMAT = '%H:%M / %d-%m-%Y'
MONTHS = ('Jan.', 'Feb.', 'Mar.', 'April.', 'May.', 'June.',
          'July.', 'Aug.', 'Sep.', 'Oct.', 'Nov.', 'Dec.')

# dummy function if you want to use i18 later and the real _ translation
def _(dummy):
    return dummy

def format_datetime_human(to_format, locale='en', timezoneinfo='Asia/Calcutta'):
    import datetime as DT
    import pytz
    utc = pytz.utc
    to_format = DT.datetime(int(to_format.year), int(to_format.month), int(to_format.day), int(to_format.hour), int(to_format.minute))
    utc_date = utc.localize(to_format)
    tzone = pytz.timezone(timezoneinfo)
    tzone_date = utc_date.astimezone(tzone)
    month = MONTHS[int(tzone_date.month) - 1]
    time_str = format_time(tzone_date, 'H:mm')
    date_str = '{0} {1}'.format(tzone_date.day, _(month))
    return "{0} {1}".format(date_str, time_str)