| Geyser | 1978-09-23 |
|---|---|
| Echinus | 1153, 1351, 1448 |
| Little Whirligig | 1424 ie |
| Puff-n-Stuff | 1800 |
| Splutter Pot | 1006 ie |
| Whirligig | 1006 ie |
| Values for Old Faithful Area | 1978-09-23 |
|---|---|
| Astronomical Twilight Begin | 05:33 |
| Nautical Twilight Begin | 06:08 |
| Civil Twilight Begin | 06:42 |
| Sunrise | 07:11 |
| Sunset | 19:19 |
| Civil Twilight End | 19:48 |
| Nautical Twilight End | 20:22 |
| Astronomical Twilight End | 20:57 |
| Moon Illumination | 59.29% |