| Geyser | 1991-08-14 |
|---|---|
| Echinus | 1010, 1120, 1200, 1220, 1430, 1540 |
| Morning | 0311 E, 0651, 1024, 1527, 1941, 2256 E |
| Values for Old Faithful Area | 1991-08-14 |
|---|---|
| Astronomical Twilight Begin | 04:31 |
| Nautical Twilight Begin | 05:14 |
| Civil Twilight Begin | 05:53 |
| Sunrise | 06:24 |
| Sunset | 20:31 |
| Civil Twilight End | 21:02 |
| Nautical Twilight End | 21:41 |
| Astronomical Twilight End | 22:24 |
| Moon Illumination | 21.45% |