| Geyser | 1982-08-15 |
|---|---|
| Graceful | 1329, 1411, 1428, 1507, 1554, 1615 |
| Steamvalve Spring | 1255 |
| Whirligig | 1324, 1424, 1527, 1629 |
| Values for Old Faithful Area | 1982-08-15 |
|---|---|
| Astronomical Twilight Begin | 04:33 |
| Nautical Twilight Begin | 05:15 |
| Civil Twilight Begin | 05:54 |
| Sunrise | 06:26 |
| Sunset | 20:29 |
| Civil Twilight End | 21:00 |
| Nautical Twilight End | 21:39 |
| Astronomical Twilight End | 22:22 |
| Moon Illumination | 20.12% |