| Geyser | 1986-05-16 |
|---|---|
| Fantail | 0931, 1712 |
| Values for Old Faithful Area | 1986-05-16 |
|---|---|
| Astronomical Twilight Begin | 03:47 |
| Nautical Twilight Begin | 04:37 |
| Civil Twilight Begin | 05:20 |
| Sunrise | 05:54 |
| Sunset | 20:44 |
| Civil Twilight End | 21:18 |
| Nautical Twilight End | 22:01 |
| Astronomical Twilight End | 22:51 |
| Moon Illumination | 41.99% |