| Geyser | 1974-08-06 |
|---|---|
| Constant | 1043, 1604 |
| Echinus | 0815, 0936, 1059, 1225, 1516 |
| Ledge | 0715 A |
| Valentine | 1516, 1523 |
| Whirligig | 1010, 1039, 1111 |
| Values for Old Faithful Area | 1974-08-06 |
|---|---|
| Astronomical Twilight Begin | 04:16 |
| Nautical Twilight Begin | 05:02 |
| Civil Twilight Begin | 05:43 |
| Sunrise | 06:15 |
| Sunset | 20:42 |
| Civil Twilight End | 21:15 |
| Nautical Twilight End | 21:55 |
| Astronomical Twilight End | 22:41 |
| Moon Illumination | 91.5% |