That's not true or perhaps I misunderstand your statement. The USNO site and every other source I鈥檝e seen indicate that the day of the summer solstice is the 鈥渓ongest day.鈥 I don鈥檛 see anything about time zones affecting length of day. There could be something quirky that goes on with time zone but I can not confirm, and it doesn鈥檛 seem to be a common thing.
That's not true or perhaps I misunderstand your statement. The USNO site and every other source I鈥檝e seen indicate that the day of the summer solstice is the 鈥渓ongest day.鈥 I don鈥檛 see anything about time zones affecting length of day. There could be something quirky that goes on with time zone but I can not confirm, and it doesn鈥檛 seem to be a common thing.