I know that many other monumental occasions occurred to happen on Pesach, specifically the first day eg.; the birth of Yitzchak, some say also the Akeidah, Eisav selling the birthright to Yaakov, parts of the Purim story. Are there other ones also?

The Covenenant of Betarim with Avraham, the angels telling Avraham of the pregnancy with Yitzchak, God speaking to Moshe at the burning bush, the miracle of 185,000 soldiers of Assyria dieing overnight in the war with Hezekiahu, Massada fell, the Warsaw Ghetto Uprising, the renewal of the Jewish settlement in Judea and Samaria after the 6 Day War.