International Holocaust Remembrance Day is observed every year on 27 January.

Key dates you might mean

Because “Holocaust Day” can refer to different commemorations, here are the main ones:

  • International Holocaust Remembrance Day (United Nations, worldwide):
    • Date: 27 January every year.
* Chosen because Auschwitz‑Birkenau was liberated on 27 January 1945.
  • Yom HaShoah (Holocaust Memorial Day in Israel and many Jewish communities):
    • Date: 27 Nisan in the Hebrew calendar (falls in April or May; the exact Gregorian date changes each year).
* Established by Israel’s Knesset as “Holocaust and Ghetto Uprising Remembrance Day,” linked to the Warsaw Ghetto Uprising.
  • Days of Remembrance in the United States :
    • An eight‑day period around Yom HaShoah used for national and local ceremonies.

Simple example to keep it straight

  • If you see news about “International Holocaust Remembrance Day” from the UN or UNESCO, that is always 27 January.
  • If a synagogue or Israeli institution announces “Yom HaShoah,” it will be on 27 Nisan (spring, date shifts each year).

In short, if you’re asking “when was the Holocaust day” in the sense of the global UN day, the answer is: 27 January every year.

Information gathered from public forums or data available on the internet and portrayed here.