| Geyser | 1941-07-07 |
|---|---|
| Whirligig | 1220 |
| Values for Old Faithful Area | 1941-07-07 |
|---|---|
| Astronomical Twilight Begin | 02:23 |
| Nautical Twilight Begin | 03:22 |
| Civil Twilight Begin | 04:10 |
| Sunrise | 04:46 |
| Sunset | 20:10 |
| Civil Twilight End | 20:46 |
| Nautical Twilight End | 21:33 |
| Astronomical Twilight End | 22:33 |
| Moon Illumination | 96.64% |