| Geyser | 1979-07-11 |
|---|---|
| Africa | 1200 |
| Echinus | 0834, 0945, 1158, 1303 maj, 1540, 1907 maj |
| Green Dragon Spring | 1200 |
| Rubble | 0000 A |
| Steamboat | 1200 |
| Veteran | 0955 |
| Yellow Funnel Spring | 1200 |
| Values for Old Faithful Area | 1979-07-11 |
|---|---|
| Astronomical Twilight Begin | 03:28 |
| Nautical Twilight Begin | 04:26 |
| Civil Twilight Begin | 05:13 |
| Sunrise | 05:49 |
| Sunset | 21:08 |
| Civil Twilight End | 21:44 |
| Nautical Twilight End | 22:30 |
| Astronomical Twilight End | 23:28 |
| Moon Illumination | 97.09% |