| Geyser | 1991-08-10 |
|---|---|
| Echinus | 0939, 1030 maj, 1215, 1259, 1405, 1517 |
| Morning | 0516, 0925, 1323, 1807, 2159 |
| Values for Old Faithful Area | 1991-08-10 |
|---|---|
| Astronomical Twilight Begin | 04:23 |
| Nautical Twilight Begin | 05:08 |
| Civil Twilight Begin | 05:48 |
| Sunrise | 06:20 |
| Sunset | 20:37 |
| Civil Twilight End | 21:09 |
| Nautical Twilight End | 21:49 |
| Astronomical Twilight End | 22:33 |
| Moon Illumination | 0.04% |