Please see this link from over in the Feline Health forum about how to adjust your shot times for the upcoming time change. Info Daylight Savings Time Starts Sunday March 14th Changing the time of your insulin shot for your cat is not quite as critical if you use Prozinc. UNLESS your cat is running in lower numbers at nadir. Still, it doesn't hurt to adjust your shot time by 15 minutes a day until the time change. Please keep this thread bumped to the top of the forum. Thanks.