| Geyser | 1982-04-08 |
|---|---|
| Giantess | 0939 |
| Values for Old Faithful Area | 1982-04-08 |
|---|---|
| Astronomical Twilight Begin | 04:08 |
| Nautical Twilight Begin | 04:45 |
| Civil Twilight Begin | 05:21 |
| Sunrise | 05:51 |
| Sunset | 18:58 |
| Civil Twilight End | 19:28 |
| Nautical Twilight End | 20:04 |
| Astronomical Twilight End | 20:42 |
| Moon Illumination | 99.98% |