| Geyser | 1972-02-21 |
|---|---|
| Old Faithful | 0953 long, 1103, 1210 long, 1314 long, 1421, 1532 long |
| Values for Old Faithful Area | 1972-02-21 |
|---|---|
| Astronomical Twilight Begin | 05:37 |
| Nautical Twilight Begin | 06:11 |
| Civil Twilight Begin | 06:45 |
| Sunrise | 07:14 |
| Sunset | 17:59 |
| Civil Twilight End | 18:28 |
| Nautical Twilight End | 19:02 |
| Astronomical Twilight End | 19:36 |
| Moon Illumination | 45.02% |