| Geyser | 1968-06-28 |
|---|---|
| Ebony | 0000 A, 1555, 2130 A |
| Echinus | 0945, 1023, 1100, 1405 |
| Ledge | 0000 A |
| Mud Spring | 1200 |
| Values for Old Faithful Area | 1968-06-28 |
|---|---|
| Astronomical Twilight Begin | 03:13 |
| Nautical Twilight Begin | 04:16 |
| Civil Twilight Begin | 05:04 |
| Sunrise | 05:41 |
| Sunset | 21:12 |
| Civil Twilight End | 21:48 |
| Nautical Twilight End | 22:37 |
| Astronomical Twilight End | 23:39 |
| Moon Illumination | 5.15% |