"The nearly 3,000 Americans living on this remote Pacific atoll have a good excuse for not remembering Saturday night: there wasn't one. Residents were going to bed Friday night and waking up Sunday morning because at midnight -- 8 A.M. Eastern daylight time on Saturday -- Kwajalein was jumping from one side of the international date line to the other."
https://github.com/eggert/tz/commit/e972ffad0049c23dd673e97ee6021b64685df129