| Geyser | 1982-08-12 |
|---|---|
| Bear Den | 0934 |
| Graceful | 1124, 1210:50, 1238:26, 1311:26, 1355:23, 1414:42, 1501:22, 1520:48 |
| Steamvalve Spring | 1101 |
| Whirligig | 1210:37, 1318, 1413:54, 1514:55 |
| Values for Old Faithful Area | 1982-08-12 |
|---|---|
| Astronomical Twilight Begin | 04:27 |
| Nautical Twilight Begin | 05:11 |
| Civil Twilight Begin | 05:50 |
| Sunrise | 06:22 |
| Sunset | 20:33 |
| Civil Twilight End | 21:05 |
| Nautical Twilight End | 21:45 |
| Astronomical Twilight End | 22:28 |
| Moon Illumination | 52.54% |