| Geyser | 1965-08-01 |
|---|---|
| Echinus | 0812, 0920, 1030, 1142, 1253, 1403, 1512, 1626 |
| Ledge | 1700 |
| Steamboat | 0800-1710 |
| Values for Old Faithful Area | 1965-08-01 |
|---|---|
| Astronomical Twilight Begin | 04:07 |
| Nautical Twilight Begin | 04:55 |
| Civil Twilight Begin | 05:37 |
| Sunrise | 06:10 |
| Sunset | 20:48 |
| Civil Twilight End | 21:22 |
| Nautical Twilight End | 22:03 |
| Astronomical Twilight End | 22:51 |
| Moon Illumination | 19.56% |