<?php

// Excel DateTimeStamp  Timezone               Result            Comments
return [
    [22269, 'America/New_York', -285102000], //    19-Dec-1960 00:00:00 EST => 19-Dec-1960 05:00:00 UTC
    [25569, 'America/New_York', 18000], //    01-Jan-1970 00:00:00 EST => 01-Jan-1970 05:00:00 UTC    PHP Base Date
    [30292, 'America/New_York', 408085200], //    07-Dec-1982 00:00:00 EST => 07-Dec-1982 05:00:00 UTC
    [39611, 'America/New_York', 1213243200], //    12-Jun-2008 00:00:00 EDT => 12-Jun-2008 04:00:00 UTC
    [50424, 'America/New_York', 2147490000], //    19-Jan-2038 00:00:00 EST => 19-Jan-2038 05:00:00 UTC    PHP 32-bit Latest Date
    [22345.56789, 'America/New_York', -278486534], //    05-Mar-1961 13:37:46 EST => 05-Mar-1961 18:37:46 UTC
    [22345.6789, 'America/New_York', -278476943], //    05-Mar-1961 16:17:37 EST => 05-Mar-1961 21:17:37 UTC
    [0.5, 'America/New_York', 61200], //    12:00:00 EST => 17:00:00 UTC
    [0.75, 'America/New_York', 82800], //    18:00.00 EST => 23:00:00 UTC
    [0.12345, 'America/New_York', 28666], //    02:57:46 EST => 07:57:46 UTC
    [41215, 'America/New_York', 1351828800], //    02-Nov-2012 00:00:00 EDT => 02-Nov-2012 04:00:00 UTC
    [22269, 'Pacific/Auckland', -285163200], //    19-Dec-1960 00:00:00 NZST => 18-Dec-1960 12:00:00 UTC
    [25569, 'Pacific/Auckland', -43200], //    01-Jan-1970 00:00:00 NZST => 31-Dec-1969 12:00:00 UTC    PHP Base Date
    [30292, 'Pacific/Auckland', 408020400], //    07-Dec-1982 00:00:00 NZDT => 06-Dec-1982 11:00:00 UTC
    [39611, 'Pacific/Auckland', 1213185600], //    12-Jun-2008 00:00:00 NZST => 11-Jun-2008 12:00:00 UTC
    [50423.5, 'Pacific/Auckland', 2147382000], //    18-Jan-2038 12:00:00 NZDT => 17-Jan-2038 23:00:00 UTC    PHP 32-bit Latest Date
    [22345.56789, 'Pacific/Auckland', -278547734], //    05-Mar-1961 13:37:46 NZST => 05-Mar-1961 01:37:46 UTC
    [22345.6789, 'Pacific/Auckland', -278538143], //    05-Mar-1961 16:17:37 NZST => 05-Mar-1961 04:17:37 UTC
    [0.5, 'Pacific/Auckland', 0], //    12:00:00 NZST => 00:00:00 UTC
    [0.75, 'Pacific/Auckland', 21600], //    18:00.00 NZST => 06:00:00 UTC
    [0.12345, 'Pacific/Auckland', -32534], //    02:57:46 NZST => 14:57:46 UTC
    [41215, 'Pacific/Auckland', 1351767600], //    02-Nov-2012 00:00:00 NZDT => 01-Nov-2012 11:00:00 UTC
];