| Geyser | 1972-02-27 |
|---|---|
| Old Faithful | 0920 long, 1029 short, 1122 long, 1239 short, 1322 long, 1439 short, 1533 long |
| Values for Old Faithful Area | 1972-02-27 |
|---|---|
| Astronomical Twilight Begin | 05:28 |
| Nautical Twilight Begin | 06:01 |
| Civil Twilight Begin | 06:35 |
| Sunrise | 07:04 |
| Sunset | 18:07 |
| Civil Twilight End | 18:36 |
| Nautical Twilight End | 19:10 |
| Astronomical Twilight End | 19:44 |
| Moon Illumination | 96.61% |