| Geyser | 1964-10-11 |
|---|---|
| Echinus | 1800 |
| Steamboat | 1800 |
| Values for Old Faithful Area | 1964-10-11 |
|---|---|
| Astronomical Twilight Begin | 04:57 |
| Nautical Twilight Begin | 05:31 |
| Civil Twilight Begin | 06:04 |
| Sunrise | 06:33 |
| Sunset | 17:46 |
| Civil Twilight End | 18:15 |
| Nautical Twilight End | 18:48 |
| Astronomical Twilight End | 19:22 |
| Moon Illumination | 28.07% |