| Geyser | 1977-07-04 |
|---|---|
| Echinus | 1058, 1500, 1605 |
| Values for Old Faithful Area | 1977-07-04 |
|---|---|
| Astronomical Twilight Begin | 03:19 |
| Nautical Twilight Begin | 04:20 |
| Civil Twilight Begin | 05:08 |
| Sunrise | 05:44 |
| Sunset | 21:11 |
| Civil Twilight End | 21:47 |
| Nautical Twilight End | 22:35 |
| Astronomical Twilight End | 23:35 |
| Moon Illumination | 86.97% |