| Geyser | 1978-06-18 |
|---|---|
| Bear Den | 1115 |
| Constant | 1515 |
| Echinus | 0935, 1200, 1348 |
| Guardian | 1400, 1430, 1515 |
| Little Whirligig | 1520 |
| Veteran | 1130, 1305 |
| Whirligig | 1035, 1535 |
| Values for Old Faithful Area | 1978-06-18 |
|---|---|
| Astronomical Twilight Begin | 03:09 |
| Nautical Twilight Begin | 04:12 |
| Civil Twilight Begin | 05:01 |
| Sunrise | 05:38 |
| Sunset | 21:10 |
| Civil Twilight End | 21:47 |
| Nautical Twilight End | 22:36 |
| Astronomical Twilight End | 23:39 |
| Moon Illumination | 90.27% |