| Geyser | 1969-09-13 |
|---|---|
| Ebony | 1530 A |
| Values for Old Faithful Area | 1969-09-13 |
|---|---|
| Astronomical Twilight Begin | 05:20 |
| Nautical Twilight Begin | 05:56 |
| Civil Twilight Begin | 06:30 |
| Sunrise | 07:00 |
| Sunset | 19:38 |
| Civil Twilight End | 20:07 |
| Nautical Twilight End | 20:42 |
| Astronomical Twilight End | 21:18 |
| Moon Illumination | 2.11% |