| Geyser | 1980-08-30 |
|---|---|
| Arsenic | 1202 |
| Bear Den | 1223 ie |
| Echinus | 1037, 1357, 1438, 1559, 1657 |
| Little Whirligig | 0000 |
| Whirligig | 0953, 1127, 1212 |
| Values for Old Faithful Area | 1980-08-30 |
|---|---|
| Astronomical Twilight Begin | 04:59 |
| Nautical Twilight Begin | 05:37 |
| Civil Twilight Begin | 06:14 |
| Sunrise | 06:44 |
| Sunset | 20:03 |
| Civil Twilight End | 20:33 |
| Nautical Twilight End | 21:09 |
| Astronomical Twilight End | 21:48 |
| Moon Illumination | 77.29% |