| Geyser | 1964-05-04 |
|---|---|
| Steamboat | 0000 A |
| Values for Old Faithful Area | 1964-05-04 |
|---|---|
| Astronomical Twilight Begin | 03:10 |
| Nautical Twilight Begin | 03:56 |
| Civil Twilight Begin | 04:36 |
| Sunrise | 05:08 |
| Sunset | 19:31 |
| Civil Twilight End | 20:03 |
| Nautical Twilight End | 20:43 |
| Astronomical Twilight End | 21:29 |
| Moon Illumination | 56.25% |