| Geyser | 1977-11-01 |
|---|---|
| Other Geyser | 0945, 1435 |
| Values for Old Faithful Area | 1977-11-01 |
|---|---|
| Astronomical Twilight Begin | 05:22 |
| Nautical Twilight Begin | 05:56 |
| Civil Twilight Begin | 06:30 |
| Sunrise | 07:01 |
| Sunset | 17:12 |
| Civil Twilight End | 17:43 |
| Nautical Twilight End | 18:17 |
| Astronomical Twilight End | 18:51 |
| Moon Illumination | 76.14% |