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The original was posted on /r/todayilearned by /u/Mrk2d on 2025-05-23 06:30:17+00:00.

Original Title: TIL that in 1929, in the United States, Kodak founder George Eastman pushed for a 13-month calendar with equal 28-day months and a new month called “Sol” between June and July. It was used at Kodak but never caught on nationwide.