| Geyser | 1983-08-07 |
|---|---|
| Bear Den | 1132 |
| Echinus | 1438, 1554, 2000 |
| Spectacle | 1044, 1101, 1102 maj, 1116, 1122, 1125, 1126, 1153, 1446, 1506, 1508 maj |
| Values for Old Faithful Area | 1983-08-07 |
|---|---|
| Astronomical Twilight Begin | 04:17 |
| Nautical Twilight Begin | 05:03 |
| Civil Twilight Begin | 05:44 |
| Sunrise | 06:16 |
| Sunset | 20:41 |
| Civil Twilight End | 21:13 |
| Nautical Twilight End | 21:54 |
| Astronomical Twilight End | 22:40 |
| Moon Illumination | 3.66% |