| Geyser | 1982-08-20 |
|---|---|
| Blue | 1615 |
| Constant | 1503 |
| Echinus | 1242, 1319, 1352, 1428, 1500 |
| Emerald Spring | 1000 |
| Values for Old Faithful Area | 1982-08-20 |
|---|---|
| Astronomical Twilight Begin | 04:41 |
| Nautical Twilight Begin | 05:23 |
| Civil Twilight Begin | 06:01 |
| Sunrise | 06:31 |
| Sunset | 20:21 |
| Civil Twilight End | 20:52 |
| Nautical Twilight End | 21:30 |
| Astronomical Twilight End | 22:11 |
| Moon Illumination | 1.82% |