Getting back to Yom HaAztmaut.
I heard beshaim Rav Aharon Soloveichik that Yom HaAtzmaut does not qualify as a Yom Tov according to the Jewish construct of making Yomim Tovim. On other holidays (Chanukah and Purim), we celebrate the end of the war and the ability to live in peace. On Yom Haatzmaut, the official sovereignty was transferred, but a war broke out right after.
IMHO, Yom HaAtzmaut should be celebrated on the day that the fighting for war of independence was over.