| Geyser | 1979-09-10 |
|---|---|
| Bear Den | 1800 |
| Echinus | 1005, 1128, 1533 maj |
| Little Whirligig | 0900 ie, 1730 ie |
| Values for Old Faithful Area | 1979-09-10 |
|---|---|
| Astronomical Twilight Begin | 05:15 |
| Nautical Twilight Begin | 05:51 |
| Civil Twilight Begin | 06:26 |
| Sunrise | 06:56 |
| Sunset | 19:44 |
| Civil Twilight End | 20:13 |
| Nautical Twilight End | 20:49 |
| Astronomical Twilight End | 21:25 |
| Moon Illumination | 80.39% |