单项选择题

Falls Lighting-up Hours
Financed and Operated by the Niagara Falls Lighting-up Board since 1925
January 1 to January 21 9:00 pm ～ Midnight
5:00 pm ～ Midnight August 21 to September 30
January 22 to February 28 8:30 pm ～ Midnight
6:30 pm ～ 10:00 pm. November 1 to November 15
March 1 to March 31* 6:30 pm ～ 11: 30 pm
7:00 pm ～ 10:00 pm November 16 ～ December 30
April 1 to April 30* 5:00 pm ～ Midnight
8:30 pm ～ 11:00 pm December 31
May 1 to August 15 5:00 pm ～ 1:00 am
*During the months of March & April, the Falls will be lit up until midnight on Fridays, Saturdays and Sundays only.

Which day of a year has the longest lighting-up time().

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