| Geyser | 1971-01-29 |
|---|---|
| Old Faithful | 1018 short, 1058 long, 1228 short, 1305 short, 1422 short, 1507 long |
| Values for Old Faithful Area | 1971-01-29 |
|---|---|
| Astronomical Twilight Begin | 06:04 |
| Nautical Twilight Begin | 06:39 |
| Civil Twilight Begin | 07:14 |
| Sunrise | 07:45 |
| Sunset | 17:27 |
| Civil Twilight End | 17:58 |
| Nautical Twilight End | 18:33 |
| Astronomical Twilight End | 19:08 |
| Moon Illumination | 7.82% |