| Geyser | 1905-04-20 |
|---|---|
| King | 1402 |
| Values for Old Faithful Area | 1905-04-20 |
|---|---|
| Astronomical Twilight Begin | 03:42 |
| Nautical Twilight Begin | 04:23 |
| Civil Twilight Begin | 05:00 |
| Sunrise | 05:31 |
| Sunset | 19:13 |
| Civil Twilight End | 19:43 |
| Nautical Twilight End | 20:21 |
| Astronomical Twilight End | 21:01 |
| Moon Illumination | 99.18% |