| Geyser | 1979-08-02 |
|---|---|
| Arsenic | 1215 |
| Constant | 1421 |
| Dark Cavern | 1120, 1430 |
| Echinus | 0932, 1018, 1052, 1224, 1400, 1532, 1603:57, 1703 |
| Little Whirligig | 0800 ie, 1130 ie, 1352:32, 1456 |
| Moxie | 1200 ie |
| Whirligig | 0920, 1130 |
| Values for Old Faithful Area | 1979-08-02 |
|---|---|
| Astronomical Twilight Begin | 04:08 |
| Nautical Twilight Begin | 04:56 |
| Civil Twilight Begin | 05:37 |
| Sunrise | 06:10 |
| Sunset | 20:48 |
| Civil Twilight End | 21:21 |
| Nautical Twilight End | 22:02 |
| Astronomical Twilight End | 22:50 |
| Moon Illumination | 60.31% |