- March 20 - Aleister Crowley performs an invocation of the Egyptian god Horus with (he wrote) "great success". Horus told him that a new magical Aeon had begun, and that he would serve as its prophet.
- April 8 - Aleister Crowley begins writing the Book of the Law in Cairo, Egypt.
- April 9 - Aleister Crowley continues writing the Book of the Law in Egypt.
- April 10 - Aleister Crowley finishes writing the Book of the Law in Cairo.
- May 11 - Salvador Dali is born in Figueras, Spain.
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