| Geyser | 1966-07-13 |
|---|---|
| Blue | 2100 ie |
| Cistern Spring | 1800 |
| Echinus | 0926, 1040, 1148, 1255, 1300, 1412, 1523, 1633, 1746 |
| Values for Old Faithful Area | 1966-07-13 |
|---|---|
| Astronomical Twilight Begin | 03:32 |
| Nautical Twilight Begin | 04:29 |
| Civil Twilight Begin | 05:15 |
| Sunrise | 05:50 |
| Sunset | 21:07 |
| Civil Twilight End | 21:42 |
| Nautical Twilight End | 22:28 |
| Astronomical Twilight End | 23:25 |
| Moon Illumination | 27.57% |