350th anniversary: Antonie van Leeuwenhoek wrote a letter to the Royal Society describing...
History · Anniversaries · Fri, October 9, 2026
1676: Antonie van Leeuwenhoek wrote a letter to the Royal Society describing "animalcules" – the first known description of protozoa (pictured).
Also on Oct 9, 2026
| Date | Event | When |
|---|---|---|
| Fri, Oct 9, 2026 | Nobel Peace Prize 2026 announced | in 15 days |
| Fri, Oct 9, 2026 | David Cameron, born 1966 (60 years) | in 15 days |
Source, method and history
- Source
- Wikipedia
- How we know
- Wikipedia "On this day" selected anniversary, 350 years (1676 to 2026).
- Recurs
- annual
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- Changes
- None recorded.
Sources: official schedules and published calendars, linked on every event; computed dates name their rule. Refreshed nightly.