| Geyser | 1964-07-19 |
|---|---|
| Echinus | 0752, 0920, 1049, 1218, 1349, 1522, 1650 |
| Steamboat | 0730-1530 |
| Sunday | 1800 |
| Values for Old Faithful Area | 1964-07-19 |
|---|---|
| Astronomical Twilight Begin | 02:43 |
| Nautical Twilight Begin | 03:37 |
| Civil Twilight Begin | 04:22 |
| Sunrise | 04:56 |
| Sunset | 20:02 |
| Civil Twilight End | 20:37 |
| Nautical Twilight End | 21:21 |
| Astronomical Twilight End | 22:15 |
| Moon Illumination | 75.74% |