on his day # 04_NUM_07_11 # And the LORD said unto Moses, They shall offer their offering, each prince on his day, for the dedicating of the altar. 
upon his day # 03_LEV_23_37 # These [are] the feasts of the LORD, which ye shall proclaim [to be] holy convocations, to offer an offering made by fire unto the LORD, a burnt offering, and a meat offering, a sacrifice, and drink offerings, every thing upon his day: