| Geyser | 1972-02-13 |
|---|---|
| Old Faithful | 0849 long, 1003 long, 1109 short, 1221 long, 1330 long, 1441 short, 1538 long, 1654 |
| Values for Old Faithful Area | 1972-02-13 |
|---|---|
| Astronomical Twilight Begin | 05:49 |
| Nautical Twilight Begin | 06:22 |
| Civil Twilight Begin | 06:56 |
| Sunrise | 07:26 |
| Sunset | 17:48 |
| Civil Twilight End | 18:18 |
| Nautical Twilight End | 18:52 |
| Astronomical Twilight End | 19:26 |
| Moon Illumination | 3.78% |