| Geyser | 1968-08-22 |
|---|---|
| Ebony | 0000 A |
| Echinus | 0857, 1016, 1125, 1410, 1525, 1602 |
| Harding | 1800 |
| Ledge | 1625, 1720 |
| Valentine | 0800, 1730 |
| Values for Old Faithful Area | 1968-08-22 |
|---|---|
| Astronomical Twilight Begin | 04:46 |
| Nautical Twilight Begin | 05:26 |
| Civil Twilight Begin | 06:04 |
| Sunrise | 06:34 |
| Sunset | 20:17 |
| Civil Twilight End | 20:48 |
| Nautical Twilight End | 21:25 |
| Astronomical Twilight End | 22:06 |
| Moon Illumination | 3.42% |