| Geyser | 1964-10-13 |
|---|---|
| Steamboat | 1745-1815 |
| Values for Old Faithful Area | 1964-10-13 |
|---|---|
| Astronomical Twilight Begin | 04:59 |
| Nautical Twilight Begin | 05:33 |
| Civil Twilight Begin | 06:07 |
| Sunrise | 06:36 |
| Sunset | 17:42 |
| Civil Twilight End | 18:11 |
| Nautical Twilight End | 18:45 |
| Astronomical Twilight End | 19:19 |
| Moon Illumination | 46.21% |