| Values for Old Faithful Area | 1973-09-14 |
|---|---|
| Astronomical Twilight Begin | 05:21 |
| Nautical Twilight Begin | 05:57 |
| Civil Twilight Begin | 06:32 |
| Sunrise | 07:01 |
| Sunset | 19:36 |
| Civil Twilight End | 20:05 |
| Nautical Twilight End | 20:40 |
| Astronomical Twilight End | 21:15 |
| Moon Illumination | 97.03% |