| Geyser | 1974-07-01 |
|---|---|
| Constant | 0930, 1545, 1715 |
| Echinus | 1219, 1346, 1511, 2258 |
| Ledge | 2040 |
| Little Whirligig | 1115, 1351, 1450 |
| Valentine | 1540 |
| Whirligig | 1312, 1420 A, 1720 |
| Values for Old Faithful Area | 1974-07-01 |
|---|---|
| Astronomical Twilight Begin | 03:15 |
| Nautical Twilight Begin | 04:17 |
| Civil Twilight Begin | 05:05 |
| Sunrise | 05:42 |
| Sunset | 21:11 |
| Civil Twilight End | 21:48 |
| Nautical Twilight End | 22:36 |
| Astronomical Twilight End | 23:38 |
| Moon Illumination | 90.07% |