| Geyser | 1974-07-06 |
|---|---|
| Constant | 1113, 1658 |
| Echinus | 0910, 1029, 1150, 1313, 1437, 1605, 1725 |
| Ledge | 0838, 2257 |
| Little Whirligig | 0940 A, 1016, 1500 A |
| Valentine | 0920 |
| Whirligig | 0955, 1057, 1548, 1611, 1639 |
| Values for Old Faithful Area | 1974-07-06 |
|---|---|
| Astronomical Twilight Begin | 03:21 |
| Nautical Twilight Begin | 04:21 |
| Civil Twilight Begin | 05:09 |
| Sunrise | 05:45 |
| Sunset | 21:10 |
| Civil Twilight End | 21:46 |
| Nautical Twilight End | 22:34 |
| Astronomical Twilight End | 23:34 |
| Moon Illumination | 97.29% |