| Geyser | 1986-05-10 |
|---|---|
| Fantail | 0253, 1128:42, 1849:34 |
| Values for Old Faithful Area | 1986-05-10 |
|---|---|
| Astronomical Twilight Begin | 03:59 |
| Nautical Twilight Begin | 04:46 |
| Civil Twilight Begin | 05:28 |
| Sunrise | 06:01 |
| Sunset | 20:37 |
| Civil Twilight End | 21:11 |
| Nautical Twilight End | 21:52 |
| Astronomical Twilight End | 22:40 |
| Moon Illumination | 1.61% |