This Day In History For 2025-04-20
2 Years Ago (more context)
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2023-04-20
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| 12:59 | clarify license on PDF version check-in: 5d98431838 user: jboy tags: revise-for-2023 | |
| 12:29 | add emphasis check-in: aa93fabd05 user: jboy tags: revise-for-2023 | |
| 09:52 | announce guest speaker for week 4 check-in: 5763c506e9 user: jboy tags: revise-for-2023 | |