| Geyser | 1962-04-17 |
|---|---|
| Vent | 0900 A |
| Values for Old Faithful Area | 1962-04-17 |
|---|---|
| Astronomical Twilight Begin | 03:48 |
| Nautical Twilight Begin | 04:28 |
| Civil Twilight Begin | 05:05 |
| Sunrise | 05:35 |
| Sunset | 19:09 |
| Civil Twilight End | 19:40 |
| Nautical Twilight End | 20:17 |
| Astronomical Twilight End | 20:56 |
| Moon Illumination | 93.21% |