What time if the day does ovulation usually occur? This is my cycle. It’s accurate. I always have 5-6 days of estrogen surge and ewcm and I started ewcm on Tuesday. I always spot when the surge begins and I spotted Tuesday. I cannot BD until Sunday afternoon. Will this be too late since I’m supposed to ovulate on Sunday? I know the egg is good for no more than 24 hrs but does ovulation occur around midnight to 2am on sat in to Sunday or Sunday into Monday ???