| Geyser | 1964-07-13 |
|---|---|
| Blue | 0833 |
| Echinus | 0752, 0920, 1050, 1221, 1345, 1514 |
| Pinwheel | 0800-1231, 1445, 1530 |
| Sunday | 0900 |
| Values for Old Faithful Area | 1964-07-13 |
|---|---|
| Astronomical Twilight Begin | 02:32 |
| Nautical Twilight Begin | 03:29 |
| Civil Twilight Begin | 04:15 |
| Sunrise | 04:51 |
| Sunset | 20:06 |
| Civil Twilight End | 20:42 |
| Nautical Twilight End | 21:28 |
| Astronomical Twilight End | 22:25 |
| Moon Illumination | 18.94% |