| Geyser | 1974-08-18 |
|---|---|
| Bear Den | 1610 A |
| Constant | 1511 |
| Echinus | 0810, 0913, 1018, 1125, 1335, 1543 |
| Ledge | 1545 |
| Pinto | 1431, 1605 |
| Pinwheel | 0832 ie |
| Valentine | 0838 ie |
| Values for Old Faithful Area | 1974-08-18 |
|---|---|
| Astronomical Twilight Begin | 04:38 |
| Nautical Twilight Begin | 05:20 |
| Civil Twilight Begin | 05:58 |
| Sunrise | 06:29 |
| Sunset | 20:24 |
| Civil Twilight End | 20:55 |
| Nautical Twilight End | 21:34 |
| Astronomical Twilight End | 22:15 |
| Moon Illumination | 0.33% |