| Geyser | 1949-09-01 |
|---|---|
| Ledge | 1115 |
| Values for Old Faithful Area | 1949-09-01 |
|---|---|
| Astronomical Twilight Begin | 04:01 |
| Nautical Twilight Begin | 04:39 |
| Civil Twilight Begin | 05:15 |
| Sunrise | 05:45 |
| Sunset | 19:00 |
| Civil Twilight End | 19:30 |
| Nautical Twilight End | 20:06 |
| Astronomical Twilight End | 20:44 |
| Moon Illumination | 66.03% |