| Geyser | 1964-07-16 |
|---|---|
| Colloidal Pool | 1200 |
| Ebony | 0730 |
| Echinus | 0750, 1016, 1131, 1246, 1400, 1516, 1631, 1800 |
| Steamboat | 2130 |
| Sunday | 0900 |
| Valentine | 0000 A |
| Values for Old Faithful Area | 1964-07-16 |
|---|---|
| Astronomical Twilight Begin | 02:37 |
| Nautical Twilight Begin | 03:33 |
| Civil Twilight Begin | 04:18 |
| Sunrise | 04:53 |
| Sunset | 20:04 |
| Civil Twilight End | 20:39 |
| Nautical Twilight End | 21:25 |
| Astronomical Twilight End | 22:20 |
| Moon Illumination | 47.95% |