| Geyser | 1977-06-05 |
|---|---|
| Echinus | 0950, 1347 |
| Values for Old Faithful Area | 1977-06-05 |
|---|---|
| Astronomical Twilight Begin | 03:16 |
| Nautical Twilight Begin | 04:16 |
| Civil Twilight Begin | 05:03 |
| Sunrise | 05:39 |
| Sunset | 21:03 |
| Civil Twilight End | 21:39 |
| Nautical Twilight End | 22:27 |
| Astronomical Twilight End | 23:27 |
| Moon Illumination | 83.78% |