| Geyser | 1980-10-31 |
|---|---|
| Giantess | 0853 ie |
| Values for Old Faithful Area | 1980-10-31 |
|---|---|
| Astronomical Twilight Begin | 05:21 |
| Nautical Twilight Begin | 05:55 |
| Civil Twilight Begin | 06:29 |
| Sunrise | 07:00 |
| Sunset | 17:13 |
| Civil Twilight End | 17:44 |
| Nautical Twilight End | 18:18 |
| Astronomical Twilight End | 18:52 |
| Moon Illumination | 44.11% |