| 2001 | Jan 1 | Mon |
| 2004 | Feb 2 | Mon |
| 2009 | Mar 3 | Tue |
| 2016 | Apr 4 | Mon |
| 2025 | May 5 | Mon |
| 2036 | Jun 6 | Fri |
Square Root Day can happen on various dates throughout the year In 2025, this was May 5th.
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