| Geyser | 1950-09-23 |
|---|---|
| Giant | 0000 A |
| Values for Old Faithful Area | 1950-09-23 |
|---|---|
| Astronomical Twilight Begin | 04:33 |
| Nautical Twilight Begin | 05:08 |
| Civil Twilight Begin | 05:42 |
| Sunrise | 06:11 |
| Sunset | 18:20 |
| Civil Twilight End | 18:49 |
| Nautical Twilight End | 19:23 |
| Astronomical Twilight End | 19:58 |
| Moon Illumination | 91.31% |