| Geyser | 1983-09-12 |
|---|---|
| Cauliflower | 1228, 1252 maj, 1307 |
| Echinus | 0950 ie, 1117 |
| Mercury | 1256, 1338, 1536, 1638 |
| Porkchop | 1100 |
| Steamboat | 1200 |
| Whirligig | 1355, 1655, 1940, 2240 |
| Values for Old Faithful Area | 1983-09-12 |
|---|---|
| Astronomical Twilight Begin | 05:18 |
| Nautical Twilight Begin | 05:54 |
| Civil Twilight Begin | 06:29 |
| Sunrise | 06:58 |
| Sunset | 19:40 |
| Civil Twilight End | 20:10 |
| Nautical Twilight End | 20:44 |
| Astronomical Twilight End | 21:21 |
| Moon Illumination | 31.46% |