| Geyser | 1964-06-23 |
|---|---|
| Echinus | 1800 |
| Valentine | 1345 |
| Values for Old Faithful Area | 1964-06-23 |
|---|---|
| Astronomical Twilight Begin | 02:10 |
| Nautical Twilight Begin | 03:13 |
| Civil Twilight Begin | 04:02 |
| Sunrise | 04:39 |
| Sunset | 20:11 |
| Civil Twilight End | 20:48 |
| Nautical Twilight End | 21:37 |
| Astronomical Twilight End | 22:40 |
| Moon Illumination | 97.22% |