It's fasting sunrise to sunset, correct?
You should be fine as long as once you eat your meal after sunset you wait 2 or 3 hours for the food energy to start getting into your system.
Maybe if you eat before sun up ad have a session before noon.
You may be ok at any point if you eat before sunrise. You'll probably feel more wiped out than normal, but you won't die. It's not that long.12 or 14 hours this time of year?
Of course, if you're going days totally without food, no.
But if you're worried eat after dark, and have your sessions later in the night. Should be fine.
Christopher