| Geyser | 1980-09-18 |
|---|---|
| Echinus | 1520:10 min, 1527:55, 1730:11, 1759:39 min, 1806:50, 1837:16 min, 1843:33 |
| Orby | 1912:25, 1918:00, 1919:38, 1921 |
| Values for Old Faithful Area | 1980-09-18 |
|---|---|
| Astronomical Twilight Begin | 05:27 |
| Nautical Twilight Begin | 06:02 |
| Civil Twilight Begin | 06:37 |
| Sunrise | 07:06 |
| Sunset | 19:28 |
| Civil Twilight End | 19:57 |
| Nautical Twilight End | 20:31 |
| Astronomical Twilight End | 21:06 |
| Moon Illumination | 56.82% |