| Geyser | 1974-08-10 |
|---|---|
| Constant | 1014, 1118 |
| Ebony | 1133 |
| Echinus | 0910, 1033, 1158, 1325, 1440, 1558, 1714 |
| Ledge | 1255 |
| Little Whirligig | 1132 |
| Valentine | 0645, 0811, 0945, 1220 A |
| Whirligig | 1000, 1045 |
| Values for Old Faithful Area | 1974-08-10 |
|---|---|
| Astronomical Twilight Begin | 04:23 |
| Nautical Twilight Begin | 05:08 |
| Civil Twilight Begin | 05:48 |
| Sunrise | 06:20 |
| Sunset | 20:36 |
| Civil Twilight End | 21:09 |
| Nautical Twilight End | 21:48 |
| Astronomical Twilight End | 22:33 |
| Moon Illumination | 59.11% |