| Geyser | 1967-07-27 |
|---|---|
| Constant | 1800 |
| Ebony | 1655 |
| Echinus | 0850, 0940, 1104, 1150, 1236, 1302, 1453, 1532, 1624, 1704 |
| Tantalus | 0800 |
| Values for Old Faithful Area | 1967-07-27 |
|---|---|
| Astronomical Twilight Begin | 03:56 |
| Nautical Twilight Begin | 04:47 |
| Civil Twilight Begin | 05:30 |
| Sunrise | 06:04 |
| Sunset | 20:55 |
| Civil Twilight End | 21:29 |
| Nautical Twilight End | 22:12 |
| Astronomical Twilight End | 23:02 |
| Moon Illumination | 70.81% |