| Geyser | 1977-08-08 |
|---|---|
| Echinus | 1218 |
| Little Whirligig | 0935, 1405 |
| Values for Old Faithful Area | 1977-08-08 |
|---|---|
| Astronomical Twilight Begin | 04:20 |
| Nautical Twilight Begin | 05:05 |
| Civil Twilight Begin | 05:46 |
| Sunrise | 06:18 |
| Sunset | 20:39 |
| Civil Twilight End | 21:11 |
| Nautical Twilight End | 21:51 |
| Astronomical Twilight End | 22:37 |
| Moon Illumination | 36.95% |