| Geyser | 1964-08-06 |
|---|---|
| Echinus | 0810, 0920, 1030, 1139, 1259, 1405, 1524, 1643 |
| Pinwheel | 1200, 1715, 1857 |
| Splutter Pot | 1200 |
| Steamboat | 0745 |
| Sunday | 0725 |
| Valentine | 0000 |
| Values for Old Faithful Area | 1964-08-06 |
|---|---|
| Astronomical Twilight Begin | 03:17 |
| Nautical Twilight Begin | 04:02 |
| Civil Twilight Begin | 04:43 |
| Sunrise | 05:16 |
| Sunset | 19:42 |
| Civil Twilight End | 20:14 |
| Nautical Twilight End | 20:55 |
| Astronomical Twilight End | 21:41 |
| Moon Illumination | 3.23% |