| Geyser | 1949-08-12 |
|---|---|
| Valentine | 0830 |
| Values for Old Faithful Area | 1949-08-12 |
|---|---|
| Astronomical Twilight Begin | 03:27 |
| Nautical Twilight Begin | 04:11 |
| Civil Twilight Begin | 04:50 |
| Sunrise | 05:22 |
| Sunset | 19:33 |
| Civil Twilight End | 20:05 |
| Nautical Twilight End | 20:45 |
| Astronomical Twilight End | 21:28 |
| Moon Illumination | 88.8% |