| Geyser | 1971-02-01 |
|---|---|
| Lion | 1153, 1400, 1620 |
| Old Faithful | 1028 long, 1158 short, 1244 long, 1407 short, 1508 long, 1615 short |
| Values for Old Faithful Area | 1971-02-01 |
|---|---|
| Astronomical Twilight Begin | 06:02 |
| Nautical Twilight Begin | 06:36 |
| Civil Twilight Begin | 07:11 |
| Sunrise | 07:42 |
| Sunset | 17:31 |
| Civil Twilight End | 18:02 |
| Nautical Twilight End | 18:37 |
| Astronomical Twilight End | 19:11 |
| Moon Illumination | 35.47% |