| Geyser | 1991-08-23 |
|---|---|
| Echinus | 1030, 1127, 1240 maj, 1420, 1544 |
| Morning | 0028 E, 0408 E, 0737, 1106, 1444, 1912, 2303 E |
| Values for Old Faithful Area | 1991-08-23 |
|---|---|
| Astronomical Twilight Begin | 04:46 |
| Nautical Twilight Begin | 05:27 |
| Civil Twilight Begin | 06:04 |
| Sunrise | 06:35 |
| Sunset | 20:16 |
| Civil Twilight End | 20:47 |
| Nautical Twilight End | 21:24 |
| Astronomical Twilight End | 22:05 |
| Moon Illumination | 95.72% |