| Geyser | 1964-07-29 |
|---|---|
| Echinus | 0823, 0948, 1114, 1242, 1409, 1533, 1658, 1821 |
| Steamboat | 2330 |
| Valentine | 0000 A |
| Values for Old Faithful Area | 1964-07-29 |
|---|---|
| Astronomical Twilight Begin | 03:01 |
| Nautical Twilight Begin | 03:51 |
| Civil Twilight Begin | 04:33 |
| Sunrise | 05:07 |
| Sunset | 19:52 |
| Civil Twilight End | 20:25 |
| Nautical Twilight End | 21:08 |
| Astronomical Twilight End | 21:57 |
| Moon Illumination | 79.29% |