| Geyser | 1972-12-20 |
|---|---|
| Riverside | 1240 |
| Values for Old Faithful Area | 1972-12-20 |
|---|---|
| Astronomical Twilight Begin | 06:10 |
| Nautical Twilight Begin | 06:45 |
| Civil Twilight Begin | 07:22 |
| Sunrise | 07:56 |
| Sunset | 16:46 |
| Civil Twilight End | 17:19 |
| Nautical Twilight End | 17:56 |
| Astronomical Twilight End | 18:31 |
| Moon Illumination | 99.98% |