| Geyser | 1977-07-03 |
|---|---|
| Cistern Spring | 1200 |
| Echinus | 0840, 1038, 1504 |
| Little Whirligig | 1220 A |
| Values for Old Faithful Area | 1977-07-03 |
|---|---|
| Astronomical Twilight Begin | 03:18 |
| Nautical Twilight Begin | 04:19 |
| Civil Twilight Begin | 05:07 |
| Sunrise | 05:43 |
| Sunset | 21:11 |
| Civil Twilight End | 21:47 |
| Nautical Twilight End | 22:35 |
| Astronomical Twilight End | 23:36 |
| Moon Illumination | 93.67% |