Numbers 28-29 summarizes the offerings of God's appointed times (moedim):
-Morning and Evening
-Shabbat
-Rosh Chodesh (new moon)
-Pesach (Passover)
-Hag haMatza (Unleavened Bread)
-Shavuot (Pentecost)
-Yom Teruah (Trumpets)
-Yom Kippur (Atonements)
-Sukkot (Tabernacles)
-Shemini Atzaret (Eighth day)

Do you see which day is missing?

(Hint: The early FirstFruits during Unleavened Bread!)