| Geyser | 1964-09-26 |
|---|---|
| Colloidal Pool | 1800 |
| Echinus | 0841, 0944, 1047, 1150, 1252, 1356, 1500, 1605 |
| Hurricane Vent | 1800 |
| Pinto | 1800 |
| Steamboat | 0800-1400 |
| Whirligig | 1800 |
| Values for Old Faithful Area | 1964-09-26 |
|---|---|
| Astronomical Twilight Begin | 04:38 |
| Nautical Twilight Begin | 05:12 |
| Civil Twilight Begin | 05:46 |
| Sunrise | 06:15 |
| Sunset | 18:13 |
| Civil Twilight End | 18:42 |
| Nautical Twilight End | 19:16 |
| Astronomical Twilight End | 19:50 |
| Moon Illumination | 75.62% |