| Geyser | 1964-10-21 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1964-10-21 |
|---|---|
| Astronomical Twilight Begin | 05:09 |
| Nautical Twilight Begin | 05:43 |
| Civil Twilight Begin | 06:17 |
| Sunrise | 06:46 |
| Sunset | 17:29 |
| Civil Twilight End | 17:58 |
| Nautical Twilight End | 18:32 |
| Astronomical Twilight End | 19:06 |
| Moon Illumination | 99.99% |