150th anniversary: Nathaniel P. Langford of the Washburn–Langford–Doane Expedition first observed...
History · Anniversaries · Fri, September 18, 2020
1870: Nathaniel P. Langford of the Washburn–Langford–Doane Expedition first observed a geyser in the Wyoming Territory erupting at regular intervals, naming it Old Faithful (video featured).
Also on Sep 18, 2020
| Date | Event | When |
|---|---|---|
| Fri, Sep 18, 2020 | Brazil LGPD: LGPD in force | 6 yr ago |
Source, method and history
- Source
- Wikipedia
- How we know
- Wikipedia "On this day" selected anniversary, 150 years (1870 to 2020).
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- 2026-09-25: added to 2020-09-18