| Geyser | 1977-06-11 |
|---|---|
| Echinus | 0905, 1436 |
| Splutter Pot | 0820 |
| Values for Old Faithful Area | 1977-06-11 |
|---|---|
| Astronomical Twilight Begin | 03:11 |
| Nautical Twilight Begin | 04:13 |
| Civil Twilight Begin | 05:01 |
| Sunrise | 05:38 |
| Sunset | 21:07 |
| Civil Twilight End | 21:44 |
| Nautical Twilight End | 22:32 |
| Astronomical Twilight End | 23:34 |
| Moon Illumination | 25.24% |