| Geyser | 1940-07-27 |
|---|---|
| Valentine | 0000 A |
| Values for Old Faithful Area | 1940-07-27 |
|---|---|
| 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 | 22:01 |
| Moon Illumination | 51.75% |