| Geyser | 1964-09-03 |
|---|---|
| Echinus | 0810, 0928, 1053, 1152, 1300, 1405, 1513, 1618, 1725 |
| Steamboat | 0800-1200 |
| Values for Old Faithful Area | 1964-09-03 |
|---|---|
| Astronomical Twilight Begin | 04:05 |
| Nautical Twilight Begin | 04:43 |
| Civil Twilight Begin | 05:18 |
| Sunrise | 05:48 |
| Sunset | 18:56 |
| Civil Twilight End | 19:26 |
| Nautical Twilight End | 20:01 |
| Astronomical Twilight End | 20:39 |
| Moon Illumination | 10.71% |