The test was conducted in the Jornada del Muerto desert about 35 miles (56 km) southeast of Socorro, New Mexico, on what was then the USAAF Alamogordo Bombing and Gunnery Range (now part of White Sands Missile Range).
USA and Canada past and future DST schedules here. Hawaii is in the Hawaii-Aleutian Time Zone in the United States, which is 10 hours behind Greenwich Mean Time ( GMT-10 ). Unlike most states in the US, Daylight Saving Time is not observed in Hawaii , which maintains its 10 hours difference behind GMT throughout the year.
An email sent from someone in the Hawaii-Aleutian Standard Time (HAST) time zone will have the time zone listed as -1000 in the headers of the email. (However, -1000 does not have to be in Hawaii-Aleutian Standard Time, as other time zones could have the same UTC offset).