john-conway
Topic | Replies | Views | Activity | |
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The Doomsday Algorithm: Mentally Calculate Day of Week for Any Date | 0 | 364 | 1 November 2021 |
Topic | Replies | Views | Activity | |
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The Doomsday Algorithm: Mentally Calculate Day of Week for Any Date | 0 | 364 | 1 November 2021 |