Getting this additional, my check out is that "at" needs to be employed for gatherings that aren't times of the 7 days (at Christmas, at Easter, on the weekend, at lunchtime, at 9 o'clock) irrelevant of length, and "on" where by the time is each day of your 7 days (on Saturday). I'd personally argue this is to do with The truth that "at" implies a … Read More