| Geyser | 1964-05-28 |
|---|---|
| Steamboat | 1035 |
| Values for Old Faithful Area | 1964-05-28 |
|---|---|
| Astronomical Twilight Begin | 02:26 |
| Nautical Twilight Begin | 03:22 |
| Civil Twilight Begin | 04:08 |
| Sunrise | 04:43 |
| Sunset | 19:57 |
| Civil Twilight End | 20:32 |
| Nautical Twilight End | 21:18 |
| Astronomical Twilight End | 22:14 |
| Moon Illumination | 96.81% |