| Geyser | 1969-08-12 |
|---|---|
| Ebony | 1510 |
| Echinus | 1042, 1206, 1420, 1552 |
| Fan-Norris | 1640 |
| Giantess | 0000 A |
| Veteran | 1200 |
| Values for Old Faithful Area | 1969-08-12 |
|---|---|
| Astronomical Twilight Begin | 04:27 |
| Nautical Twilight Begin | 05:11 |
| Civil Twilight Begin | 05:51 |
| Sunrise | 06:22 |
| Sunset | 20:33 |
| Civil Twilight End | 21:05 |
| Nautical Twilight End | 21:44 |
| Astronomical Twilight End | 22:28 |
| Moon Illumination | 0.9% |