| Geyser | 1986-05-19 |
|---|---|
| Fantail | 1259, 2112 |
| Values for Old Faithful Area | 1986-05-19 |
|---|---|
| Astronomical Twilight Begin | 03:41 |
| Nautical Twilight Begin | 04:33 |
| Civil Twilight Begin | 05:17 |
| Sunrise | 05:51 |
| Sunset | 20:48 |
| Civil Twilight End | 21:22 |
| Nautical Twilight End | 22:06 |
| Astronomical Twilight End | 22:57 |
| Moon Illumination | 72.64% |