| Values for Old Faithful Area | 1973-01-28 |
|---|---|
| Astronomical Twilight Begin | 06:05 |
| Nautical Twilight Begin | 06:39 |
| Civil Twilight Begin | 07:14 |
| Sunrise | 07:45 |
| Sunset | 17:26 |
| Civil Twilight End | 17:58 |
| Nautical Twilight End | 18:33 |
| Astronomical Twilight End | 19:07 |
| Moon Illumination | 31.32% |