| Geyser | 1967-08-01 |
|---|---|
| Dark Cavern | 1820 |
| Echinus | 0835, 0918, 1001, 1045, 1128, 1213, 1508, 1553, 1722 |
| Harding | 0800 |
| Values for Old Faithful Area | 1967-08-01 |
|---|---|
| Astronomical Twilight Begin | 04:06 |
| Nautical Twilight Begin | 04:54 |
| Civil Twilight Begin | 05:36 |
| Sunrise | 06:09 |
| Sunset | 20:49 |
| Civil Twilight End | 21:22 |
| Nautical Twilight End | 22:04 |
| Astronomical Twilight End | 22:52 |
| Moon Illumination | 24.74% |