| Geyser | 1967-07-31 |
|---|---|
| Echinus | 0822, 0902 A, 0945, 1024, 1106, 1149, 1400, 1443, 1525, 1608, 1650 |
| Harding | 2025, 2025 |
| Values for Old Faithful Area | 1967-07-31 |
|---|---|
| Astronomical Twilight Begin | 04:04 |
| Nautical Twilight Begin | 04:53 |
| Civil Twilight Begin | 05:35 |
| Sunrise | 06:08 |
| Sunset | 20:50 |
| Civil Twilight End | 21:24 |
| Nautical Twilight End | 22:06 |
| Astronomical Twilight End | 22:54 |
| Moon Illumination | 33.64% |