| Geyser | 1964-06-18 |
|---|---|
| Echinus | 0926, 1051, 1340, 1430, 1630 |
| Ledge | 0000 A |
| Steamboat | 0830 |
| Valentine | 0000 A |
| Values for Old Faithful Area | 1964-06-18 |
|---|---|
| Astronomical Twilight Begin | 02:09 |
| Nautical Twilight Begin | 03:12 |
| Civil Twilight Begin | 04:01 |
| Sunrise | 04:38 |
| Sunset | 20:10 |
| Civil Twilight End | 20:47 |
| Nautical Twilight End | 21:36 |
| Astronomical Twilight End | 22:39 |
| Moon Illumination | 63.38% |