| Geyser | 1964-10-08 |
|---|---|
| Steamboat | 1800 |
| Values for Old Faithful Area | 1964-10-08 |
|---|---|
| Astronomical Twilight Begin | 04:53 |
| Nautical Twilight Begin | 05:27 |
| Civil Twilight Begin | 06:01 |
| Sunrise | 06:30 |
| Sunset | 17:51 |
| Civil Twilight End | 18:20 |
| Nautical Twilight End | 18:54 |
| Astronomical Twilight End | 19:27 |
| Moon Illumination | 7% |