| Geyser | 1950-08-26 |
|---|---|
| Giant | 0000 A |
| Values for Old Faithful Area | 1950-08-26 |
|---|---|
| Astronomical Twilight Begin | 03:51 |
| Nautical Twilight Begin | 04:31 |
| Civil Twilight Begin | 05:08 |
| Sunrise | 05:38 |
| Sunset | 19:11 |
| Civil Twilight End | 19:42 |
| Nautical Twilight End | 20:18 |
| Astronomical Twilight End | 20:58 |
| Moon Illumination | 97.91% |