| Geyser | 1974-07-24 |
|---|---|
| Constant | 1308, 1639 |
| Echinus | 0934, 1058, 1225, 1358, 1526, 1650 |
| Emerald Spring | 1235 |
| Ledge | 0750, 2145 |
| Little Whirligig | 1409, 1641 |
| Valentine | 1325 |
| Whirligig | 1329, 1440 |
| Values for Old Faithful Area | 1974-07-24 |
|---|---|
| Astronomical Twilight Begin | 03:51 |
| Nautical Twilight Begin | 04:43 |
| Civil Twilight Begin | 05:27 |
| Sunrise | 06:01 |
| Sunset | 20:58 |
| Civil Twilight End | 21:32 |
| Nautical Twilight End | 22:16 |
| Astronomical Twilight End | 23:07 |
| Moon Illumination | 29.61% |