Yom HaShoah, also known as Holocaust Remembrance Day, occurs on the 27th of the Hebrew month of Nisan.
On the eighth day Moses called Aaron and his sons, and the elders of Israel. - Leviticus 9:1
Yom HaAtzmaut (Israel Memorial Day) and Yom HaZikaron (Independence Day) are observed in Israel as national holidays.
The Eternal One spoke to Moses, saying: "Speak to the Israelite people thus: When a woman at childbirth bears a male, she shall be impure seven days; she shall be impure as at the time of her condition of menstrual separation." - Leviticus 12:1-2
The Eternal One spoke to Moses, saying: "This shall be the ritual for a leper at the time of being purified ." - Leviticus 14:1-2
The Eternal One spoke to Moses after the death the two sons of Aaron who died when they drew too close to the presence of the Eternal. - Leviticus 16:1
The Eternal One spoke to Moses saying: "Speak to the whole Israelite community and say to them: You shall be holy, for I, the Eternal your God, am holy." - Leviticus 19:1-2