| Geyser | 1940-07-12 |
|---|---|
| Ledge | 0000 A |
| Values for Old Faithful Area | 1940-07-12 |
|---|---|
| Astronomical Twilight Begin | 02:30 |
| Nautical Twilight Begin | 03:28 |
| Civil Twilight Begin | 04:14 |
| Sunrise | 04:50 |
| Sunset | 20:07 |
| Civil Twilight End | 20:43 |
| Nautical Twilight End | 21:29 |
| Astronomical Twilight End | 22:26 |
| Moon Illumination | 50.21% |