Birth Control

hey girls! so I started birth control to try to control my ovarian cyst problems, as you know we are nearing the Time Change... I now take my pill every night at 9:30 pm. when we change the clocks back do I still take it at 9:30 or do I now take it at 8:30 when we change clocks? thanks so much for your help in advance! any level of knowledge is helpful!