File:Intro to Base 10 calendar- historical evolution of keeping time.pdf
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Introduction to keeping time
Summary[edit]
| Description |
English: Beginning of explanation for why we need to change from 12/24 hour days and 12 months to a 10 month calendar with 9 day weeks making 360 days, and alternating with 37 day months making for 365 days. The .25 would be added as a leap year every four years. |
| Date | |
| Source | Own work |
| Author | Roger R Fontaine |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:23, 25 November 2021 |  | 1,239 × 1,752 (1.07 MB) | Rogerrfontaine (talk | contribs) | Uploaded own work with UploadWizard |
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