| Geyser | 1979-07-04 |
|---|---|
| Blue | 1530 |
| Echinus | 0846:31, 1226 maj, 1559, 2000 A maj, 2149, 2254 |
| Steamboat | 1200 |
| Whirligig | 0950 |
| Values for Old Faithful Area | 1979-07-04 |
|---|---|
| Astronomical Twilight Begin | 03:19 |
| Nautical Twilight Begin | 04:19 |
| Civil Twilight Begin | 05:07 |
| Sunrise | 05:44 |
| Sunset | 21:11 |
| Civil Twilight End | 21:47 |
| Nautical Twilight End | 22:35 |
| Astronomical Twilight End | 23:36 |
| Moon Illumination | 65.79% |