| Geyser | 1975-02-10 |
|---|---|
| Castle | 1405 ie |
| Grand | 1611 ie |
| Lion | 0925, 1046, 1233, 1528 ie |
| Old Faithful | 0934 short, 1039 long, 1159 short, 1254 long, 1410 short, 1457 long, 1613 short |
| Riverside | 1232 |
| Round | 1520 |
| Values for Old Faithful Area | 1975-02-10 |
|---|---|
| Astronomical Twilight Begin | 05:52 |
| Nautical Twilight Begin | 06:26 |
| Civil Twilight Begin | 07:00 |
| Sunrise | 07:30 |
| Sunset | 17:44 |
| Civil Twilight End | 18:14 |
| Nautical Twilight End | 18:48 |
| Astronomical Twilight End | 19:22 |
| Moon Illumination | 0.77% |