| Geyser | 1941-07-27 |
|---|---|
| Valentine | 0615 |
| Values for Old Faithful Area | 1941-07-27 |
|---|---|
| Astronomical Twilight Begin | 02:57 |
| Nautical Twilight Begin | 03:47 |
| Civil Twilight Begin | 04:30 |
| Sunrise | 05:04 |
| Sunset | 19:54 |
| Civil Twilight End | 20:28 |
| Nautical Twilight End | 21:11 |
| Astronomical Twilight End | 22:02 |
| Moon Illumination | 10.01% |