Yeah the happen everyday oh sorry every night. While the day passes it turned into an incredible, multi-colored water and light masterpiece. Here going to share it's schedule, hope will help you.

Falls Illumination Schedule
JANUARY 1 – JANUARY 31 5 PM – 1 AM
FEBRUARY 1 – MARCH 11 5:30 PM – 1 AM
MARCH 12 – MARCH 31 7:30 PM – 2 AM
APRIL 1- MAY 14 8:00 PM – 2 AM
MAY 15 – JULY 31 8:30 PM – 2 AM
AUGUST 1 - AUGUST 15 8:00 PM – 2 AM
AUGUST 16 - AUGUST 31 7:30 PM – 2 AM
SEPTEMBER 1 - 19 7:00 PM – 2 AM
SEPTEMBER 20 - 30 6:30 PM – 2 AM
OCTOBER 1 - 15 6:15 PM – 2 AM
OCTOBER 16 - OCTOBER 31 6:00 PM – 2 AM
NOVEMBER 1 - DECEMBER 31 4:30 PM – 2 AM