Correction to: The Mathematical Intelligencer 45:2 (2022), 131–132 https://doi.org/10.1007/s00283-022-10229-3


The article “A Simple Formula for Doomsday,” by Hirofumi Nakai was originally published electronically on the publisher’s internet portal on December 2, 2022, without open access. The copyright of the article changed on June 19, 2023, to ©The Author(s) 2023, and the article is forthwith being distributed under a Creative Commons Attribution CC BY 4.0.