| Geyser | 1979-10-13 |
|---|---|
| Crater Spring | 1800 |
| Echinus | 1059, 1423 maj, 1505, 1604 |
| Little Whirligig | 1146 |
| Values for Old Faithful Area | 1979-10-13 |
|---|---|
| Astronomical Twilight Begin | 05:59 |
| Nautical Twilight Begin | 06:32 |
| Civil Twilight Begin | 07:06 |
| Sunrise | 07:35 |
| Sunset | 18:43 |
| Civil Twilight End | 19:12 |
| Nautical Twilight End | 19:46 |
| Astronomical Twilight End | 20:20 |
| Moon Illumination | 46.68% |