| Geyser | 1966-08-01 |
|---|---|
| Blue | 1728 ie |
| Ebony | 1710, 2030 A |
| Echinus | 0845 A, 0947, 1100, 1212, 1320, 1429, 1541, 1651 |
| Ledge | 1616 |
| Values for Old Faithful Area | 1966-08-01 |
|---|---|
| Astronomical Twilight Begin | 04:06 |
| Nautical Twilight Begin | 04:54 |
| Civil Twilight Begin | 05:36 |
| Sunrise | 06:09 |
| Sunset | 20:49 |
| Civil Twilight End | 21:22 |
| Nautical Twilight End | 22:04 |
| Astronomical Twilight End | 22:52 |
| Moon Illumination | 99.99% |