| Geyser | 1972-02-17 |
|---|---|
| Old Faithful | 0954 long, 1111 short, 1202 long, 1314 short, 1417 long, 1531 short, 1638 |
| Values for Old Faithful Area | 1972-02-17 |
|---|---|
| Astronomical Twilight Begin | 05:43 |
| Nautical Twilight Begin | 06:17 |
| Civil Twilight Begin | 06:51 |
| Sunrise | 07:20 |
| Sunset | 17:53 |
| Civil Twilight End | 18:23 |
| Nautical Twilight End | 18:57 |
| Astronomical Twilight End | 19:31 |
| Moon Illumination | 7% |