| Geyser | 1974-09-15 |
|---|---|
| Bear Den | 1705 |
| Constant | 1318, 1519, 1649 |
| Echinus | 1021, 1140, 1302, 1426, 1551, 1716 |
| Emerald Spring | 1800 |
| Little Whirligig | 1159, 1623 |
| Values for Old Faithful Area | 1974-09-15 |
|---|---|
| Astronomical Twilight Begin | 05:22 |
| Nautical Twilight Begin | 05:58 |
| Civil Twilight Begin | 06:33 |
| Sunrise | 07:02 |
| Sunset | 19:34 |
| Civil Twilight End | 20:04 |
| Nautical Twilight End | 20:38 |
| Astronomical Twilight End | 21:14 |
| Moon Illumination | 1.12% |