[
    [datetime.datetime(2001, 12, 15, 3, 29, 43, 100000), 'UTC-05:30'],
    [datetime.datetime(2001, 12, 14, 16, 29, 43, 100000), 'UTC+05:30'],
    [datetime.datetime(2001, 12, 14, 21, 59, 43, 1010), None],
    [datetime.datetime(2001, 12, 14, 21, 59, 43, 0, FixedOffset(60, "+1")), 'UTC+01:00'],
    [datetime.datetime(2001, 12, 14, 21, 59, 43, 0, FixedOffset(-90, "-1:30")), 'UTC-01:30'],
    [datetime.datetime(2005, 7, 8, 17, 35, 4, 517600), None],
]