| Geyser | 1964-06-17 |
|---|---|
| Echinus | 0937, 1059, 1344, 1505, 1627 |
| Ledge | 0000 A |
| Steamboat | 0835 |
| Valentine | 0000 A, 0900 A |
| Values for Old Faithful Area | 1964-06-17 |
|---|---|
| Astronomical Twilight Begin | 02:09 |
| Nautical Twilight Begin | 03:12 |
| Civil Twilight Begin | 04:01 |
| Sunrise | 04:37 |
| Sunset | 20:10 |
| Civil Twilight End | 20:47 |
| Nautical Twilight End | 21:35 |
| Astronomical Twilight End | 22:38 |
| Moon Illumination | 53.44% |