From sundown on Saturday, May 4 to nightfall on Sunday, May 5, 1957. 4 Iyyar 5717 · יום הזכרון Yom HaZikaron (Hebrew: יוֹם הַזִּכָּרוֹן, lit. 'Remembrance day'), in full Yom HaZikaron LeHalelei Ma'arkhot Yisrael ul'Nifge'ei Pe'ulot HaEivah (Hebrew: יוֹם הזִּכָּרוֹן לְחַלְלֵי מַעַרְכוֹת יִשְׂרָאֵל וּלְנִפְגְעֵי פְּעֻלּוֹת הָאֵיבָה, lit. 'Remembrance day for the fallen soldiers of the wars of Israel and victims of actions of terrorism'), is Israel's official day of remembrance for fallen soldiers and terrorism victims, enacted into Israeli law in 1963. While Yom HaZikaron has been traditionally dedicated to fallen soldiers, commemoration has also been extended to civilian victims of terrorism. Wiki link Dates: Hebcal.com (CC BY 4.0), Diaspora schedule. Text: Wikipedia (CC BY-SA).