| Geyser | 1964-08-08 |
|---|---|
| Echinus | 0710, 0825, 0940, 1100, 1214, 1335, 1428, 1612, 1730 |
| Steamboat | 0000-1730, 2110, 2129 |
| Values for Old Faithful Area | 1964-08-08 |
|---|---|
| Astronomical Twilight Begin | 03:20 |
| Nautical Twilight Begin | 04:05 |
| Civil Twilight Begin | 04:46 |
| Sunrise | 05:18 |
| Sunset | 19:39 |
| Civil Twilight End | 20:11 |
| Nautical Twilight End | 20:51 |
| Astronomical Twilight End | 21:36 |
| Moon Illumination | 0.35% |