We convert your eating-window start to minutes after midnight, add the protocol’s eating hours (or 24 minus your custom fasting hours), and reduce modulo 24 hours to find the stop-eating clock time. Fasting duration is the remainder of the day. That is pure scheduling arithmetic—metabolic claims about autophagy or hormones are outside this tool. For broader fitness and lifestyle planning, combine timing with calories and protein targets from qualified professionals.

References