| Geyser | 1974-07-23 |
|---|---|
| Constant | 0912, 1153, 1616 |
| Ebony | 0924 |
| Echinus | 0830, 0954, 1305, 1444, 1621 |
| Ledge | 0630 |
| Little Whirligig | 0951, 1148, 1420, 1604 |
| Rubble | 1600 |
| Valentine | 1637 |
| Whirligig | 1047, 1118, 1439, 1542, 1648, 1721 |
| Values for Old Faithful Area | 1974-07-23 |
|---|---|
| Astronomical Twilight Begin | 03:49 |
| Nautical Twilight Begin | 04:42 |
| Civil Twilight Begin | 05:26 |
| Sunrise | 06:00 |
| Sunset | 20:59 |
| Civil Twilight End | 21:33 |
| Nautical Twilight End | 22:17 |
| Astronomical Twilight End | 23:09 |
| Moon Illumination | 19.72% |