| Geyser | 1973-03-26 |
|---|---|
| Ledge | 2138 |
| Valentine | 0000 |
| Values for Old Faithful Area | 1973-03-26 |
|---|---|
| Astronomical Twilight Begin | 04:35 |
| Nautical Twilight Begin | 05:11 |
| Civil Twilight Begin | 05:45 |
| Sunrise | 06:14 |
| Sunset | 18:43 |
| Civil Twilight End | 19:12 |
| Nautical Twilight End | 19:46 |
| Astronomical Twilight End | 20:22 |
| Moon Illumination | 56.62% |