| Geyser | 1974-08-17 |
|---|---|
| Bear Den | 0821 |
| Constant | 1034 |
| Echinus | 0936, 1043, 1140, 1453, 1557, 1658 |
| Pinto | 1013 |
| Pinwheel | 0855 ie |
| Porkchop | 1538 ie |
| Vixen | 1800 |
| Values for Old Faithful Area | 1974-08-17 |
|---|---|
| Astronomical Twilight Begin | 04:36 |
| Nautical Twilight Begin | 05:18 |
| Civil Twilight Begin | 05:57 |
| Sunrise | 06:28 |
| Sunset | 20:26 |
| Civil Twilight End | 20:57 |
| Nautical Twilight End | 21:36 |
| Astronomical Twilight End | 22:18 |
| Moon Illumination | 0.45% |