This is a list of unofficial observances or holidays attached to specific dates (fixed or movable), organized by date for easy reference.
- Notes & Queries Vol 12, July - December 1855, G. Bell, entry for Oct. 20, 1855
- 風呂の日（furo no hi）： Day of Bath
- The Book of Days, edited by Robert Chambers, page 52, Lippencott, Philadelphia, 1863
- "Today's Top 10: Observances for January". Delco Times. 2 January 2012. Retrieved 4 January 2012.
- Perez, Sandra (March 10, 2011). "Happy Middle Name Pride Day". The Examiner.
- ABC4 News - Hug a Friend Day - And the health benefits of hugging
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