| Geyser | 1969-06-30 |
|---|---|
| Bear Den | 1110 |
| Ebony | 1110 |
| Echinus | 0858, 0941, 1025, 1113, 1244, 1422, 1508, 1557, 1644, 1729 |
| Values for Old Faithful Area | 1969-06-30 |
|---|---|
| Astronomical Twilight Begin | 03:15 |
| Nautical Twilight Begin | 04:17 |
| Civil Twilight Begin | 05:05 |
| Sunrise | 05:41 |
| Sunset | 21:11 |
| Civil Twilight End | 21:48 |
| Nautical Twilight End | 22:36 |
| Astronomical Twilight End | 23:38 |
| Moon Illumination | 99.74% |