| Geyser | 1978-09-01 |
|---|---|
| Arsenic | 1800 ie |
| Echinus | 1047, 1211 |
| Little Whirligig | 1315 |
| Morning | 1813 |
| Whirligig | 1026 |
| Values for Old Faithful Area | 1978-09-01 |
|---|---|
| Astronomical Twilight Begin | 05:01 |
| Nautical Twilight Begin | 05:39 |
| Civil Twilight Begin | 06:16 |
| Sunrise | 06:45 |
| Sunset | 20:00 |
| Civil Twilight End | 20:30 |
| Nautical Twilight End | 21:06 |
| Astronomical Twilight End | 21:44 |
| Moon Illumination | 1.95% |