Whoa, wait, I just read again: your sunset is at 3:19 in the afternoon? Yikes!Some of the wild water they drink is more like compost tea...
Afternoon snack and early supper are basically the same thing this time of year. Sunset today was at 15:19 (it actually disappears behind the hill a while before that), although they don't go to roost until almost an hour later.
Technically the sun stops being visible from the chicken plot at some time before 3pm.