| Geyser | 1964-09-23 |
|---|---|
| No reports yet |
| Values for Old Faithful Area | 1964-09-23 |
|---|---|
| Astronomical Twilight Begin | 04:34 |
| Nautical Twilight Begin | 05:09 |
| Civil Twilight Begin | 05:43 |
| Sunrise | 06:12 |
| Sunset | 18:19 |
| Civil Twilight End | 18:47 |
| Nautical Twilight End | 19:21 |
| Astronomical Twilight End | 19:56 |
| Moon Illumination | 97.04% |