| Geyser | 1979-05-27 |
|---|---|
| Africa | 0944, 1320 |
| Constant | 0941, 1328, 1406, 1658 |
| Echinus | 1010, 1143, 1441, 1606 |
| Little Whirligig | 0938 ie |
| Moxie | 1332 |
| Mud Spring | 1200 |
| Whirligig | 1330 |
| Values for Old Faithful Area | 1979-05-27 |
|---|---|
| Astronomical Twilight Begin | 03:28 |
| Nautical Twilight Begin | 04:24 |
| Civil Twilight Begin | 05:09 |
| Sunrise | 05:44 |
| Sunset | 20:55 |
| Civil Twilight End | 21:31 |
| Nautical Twilight End | 22:16 |
| Astronomical Twilight End | 23:12 |
| Moon Illumination | 1.75% |