| Geyser | 1979-09-06 |
|---|---|
| Arsenic | 1505 |
| Echinus | 0925, 1040, 1156, 1608 |
| Little Whirligig | 1231 |
| Whirligig | 1322 |
| Values for Old Faithful Area | 1979-09-06 |
|---|---|
| Astronomical Twilight Begin | 05:09 |
| Nautical Twilight Begin | 05:46 |
| Civil Twilight Begin | 06:21 |
| Sunrise | 06:51 |
| Sunset | 19:52 |
| Civil Twilight End | 20:21 |
| Nautical Twilight End | 20:57 |
| Astronomical Twilight End | 21:34 |
| Moon Illumination | 99.93% |