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National days, ongoing national weeks and months, and global observances for January 21, 2026. Plus historical events and birthdays.
These observances run for a full week; this calendar day falls inside the week.
These observances last the full month; this date is part of that month-long celebration.
Showing the first 12 on this date; there are more month-long observances. See the full months list for January.
International and other global observances on this date (may include days, weeks, or months).
Events that occurred on January 21 throughout history
Publishing house The Bodley Head published British author Agatha Christie’s debut novel in the United Kingdom, The Mysterious Affair at Styles. The novel was released in the United States a few months earlier.
