| Geyser | 1979-08-28 |
|---|---|
| Blue | 1520 |
| Constant | 1539 |
| Echinus | 0810, 0933 maj, 1400 ie |
| Little Whirligig | 1530, 1632 |
| Pinwheel | 1200 |
| Whirligig | 1530 A |
| Values for Old Faithful Area | 1979-08-28 |
|---|---|
| Astronomical Twilight Begin | 04:54 |
| Nautical Twilight Begin | 05:34 |
| Civil Twilight Begin | 06:10 |
| Sunrise | 06:40 |
| Sunset | 20:08 |
| Civil Twilight End | 20:38 |
| Nautical Twilight End | 21:15 |
| Astronomical Twilight End | 21:54 |
| Moon Illumination | 25.65% |