| Geyser | 1986-04-16 |
|---|---|
| Fantail | 0800 ie, 1540 ie, 2310 |
| Values for Old Faithful Area | 1986-04-16 |
|---|---|
| Astronomical Twilight Begin | 03:50 |
| Nautical Twilight Begin | 04:30 |
| Civil Twilight Begin | 05:07 |
| Sunrise | 05:37 |
| Sunset | 19:08 |
| Civil Twilight End | 19:39 |
| Nautical Twilight End | 20:16 |
| Astronomical Twilight End | 20:55 |
| Moon Illumination | 38.98% |