| Geyser | 1991-08-24 |
|---|---|
| Blue | 1200 |
| Constant | 1138, 1517 |
| Echinus | 1000, 1105, 1200, 1310, 1413, 1515, 1620 |
| Morning | 0231 E, 0603, 1016 E, 1503, 1907, 2237 |
| Values for Old Faithful Area | 1991-08-24 |
|---|---|
| Astronomical Twilight Begin | 04:48 |
| Nautical Twilight Begin | 05:28 |
| Civil Twilight Begin | 06:05 |
| Sunrise | 06:36 |
| Sunset | 20:14 |
| Civil Twilight End | 20:45 |
| Nautical Twilight End | 21:22 |
| Astronomical Twilight End | 22:02 |
| Moon Illumination | 98.77% |