| Geyser | 1972-02-26 |
|---|---|
| Old Faithful | 0918 short, 1008 long, 1131 short, 1214 long, 1341 short, 1433 long, 1549 short, 1637 |
| Values for Old Faithful Area | 1972-02-26 |
|---|---|
| Astronomical Twilight Begin | 05:29 |
| Nautical Twilight Begin | 06:03 |
| Civil Twilight Begin | 06:37 |
| Sunrise | 07:06 |
| Sunset | 18:06 |
| Civil Twilight End | 18:35 |
| Nautical Twilight End | 19:09 |
| Astronomical Twilight End | 19:42 |
| Moon Illumination | 91.88% |