| Geyser | 1966-08-13 |
|---|---|
| Blue | 0900 ie |
| Cistern Spring | 1640 |
| Ebony | 1510 |
| Echinus | 0804, 0911, 1022, 1128, 1236, 1346, 1456, 1604, 1715 |
| Ledge | 1125 min, 1730 A maj |
| Steamboat | 0800 |
| Values for Old Faithful Area | 1966-08-13 |
|---|---|
| Astronomical Twilight Begin | 04:29 |
| Nautical Twilight Begin | 05:12 |
| Civil Twilight Begin | 05:51 |
| Sunrise | 06:23 |
| Sunset | 20:32 |
| Civil Twilight End | 21:04 |
| Nautical Twilight End | 21:43 |
| Astronomical Twilight End | 22:27 |
| Moon Illumination | 14.41% |