Yom HaAliyah is an Israeli national holiday celebrated annually on the tenth of Nisan and also observed in schools on the seventh of Cheshvan, to commemorate the historic events of the Jewish People entering the Land of Israel as written in the Bible, which happened on the tenth of the Hebrew month of Nisan. The holiday was established to acknowledge Aliyah, immigration to the Jewish state, as a core value of the State of Israel, and honor the ongoing contributions of Olim ("Jewish immigrants") to Israeli society.
Yom Hazikaron laShoah ve-laG'vurah (Holocaust and Heroism Remembrance Day), known in Israel and abroad as Yom HaShoah, is observed as Israel's day of commemoration for the approximately six million Jews who perished in the Holocaust as a result of the actions carried out by Nazi Germany and its collaborators, and for the Jewish resistance in that period. In Israel, it is a national memorial day. It is held on the 27th of Nisan.
Yom HaZikaron LeHalalei Ma'arakhot Yisrael ul'Nifge'ei Pe'ulot HaEivah (Memorial Day for the Fallen Soldiers of Israel and Victims of Terrorism), is Israel's official remembrance day, enacted into law in 1963. While Yom HaZikaron has been traditionally dedicated to fallen soldiers, commemoration has also been extended to civilian victims of terrorism. It is held on the 3th of Iyar.
Independence Day is the national day of Israel, commemo-rating the Israeli Declaration of Independence in 1948. The day is marked by official and unofficial ceremonies and observances.
Because Israel declared independence on 14 May 1948, which corresponded with the Hebrew date 5 Iyar in that year, Yom Ha'atzmaut was originally celebrated on that date. However, to avoid Sabbath desecration, it may be commemorated one or two days before or after the 5th of Iyar if it falls too close to the Jewish Sabbath.