| Geyser | 1981-03-18 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1981-03-18 |
|---|---|
| Astronomical Twilight Begin | 04:51 |
| Nautical Twilight Begin | 05:26 |
| Civil Twilight Begin | 06:00 |
| Sunrise | 06:29 |
| Sunset | 18:33 |
| Civil Twilight End | 19:02 |
| Nautical Twilight End | 19:36 |
| Astronomical Twilight End | 20:10 |
| Moon Illumination | 94.69% |