| Geyser | 1932-02-21 |
|---|---|
| Emerald Spring | 1200 |
| Values for Old Faithful Area | 1932-02-21 |
|---|---|
| Astronomical Twilight Begin | 05:38 |
| Nautical Twilight Begin | 06:11 |
| Civil Twilight Begin | 06:45 |
| Sunrise | 07:15 |
| Sunset | 17:59 |
| Civil Twilight End | 18:28 |
| Nautical Twilight End | 19:02 |
| Astronomical Twilight End | 19:36 |
| Moon Illumination | 99.09% |