Hitler’s birthday was on April 20, 1889, one day before Easter Sunday. The first year, where his birthday and the Easter Day were coincidental, was 1919, followed by 1924 and 1930.
In 1939 Hitler’s birthday was declared a national holiday in Nazi Germany. But only for this single year. The reason: Hitler became 50 in 1939. On this occasion the largest military parade in the history of the Third Reich was held in Berlin. Unfortunately [from Hitler’s point of view] the Easter Day was that year on April 9. Presumably he would have been pleased about such a coincidence on his 50th birthday, but he was unlucky: during the whole time he was in power there was no Easter Sunday on April 20.
At Easter 1945 [April 1] Hitler was already trapped in the Führerbunker. He did also celebrate his last birthday there. Ten days later he was dead.
Only in the next century Easter Sunday was again on April 20. In 2003 and yes: this year. Probably it is just irony of history that the most evil person mankind has seen and Jesus Christ share from time to time their feast day, but it leaves a strange gut feeling.
btw: there are two ‚Hitler Easter Days‘ left for this century: 2025 and 2098. The probability for Easter Sunday at April 20 is about 3.4%. The full distribution of Easter dates here.