| Geyser | 1974-07-13 |
|---|---|
| Constant | 1208 |
| Ebony | 0909, 0947 |
| Echinus | 1007, 1145, 1316, 1503, 1637 |
| Ledge | 0939, 1800 |
| Little Whirligig | 1332, 1520 |
| Valentine | 0834, 1535 |
| Whirligig | 1409, 1435, 1459, 1607, 1642 |
| Values for Old Faithful Area | 1974-07-13 |
|---|---|
| Astronomical Twilight Begin | 03:32 |
| Nautical Twilight Begin | 04:29 |
| Civil Twilight Begin | 05:15 |
| Sunrise | 05:50 |
| Sunset | 21:07 |
| Civil Twilight End | 21:42 |
| Nautical Twilight End | 22:28 |
| Astronomical Twilight End | 23:25 |
| Moon Illumination | 43.87% |