| Geyser | 1972-01-21 |
|---|---|
| Old Faithful | 1019 short, 1109 short, 1219 short, 1321 long, 1432 long, 1557 long |
| Values for Old Faithful Area | 1972-01-21 |
|---|---|
| Astronomical Twilight Begin | 06:10 |
| Nautical Twilight Begin | 06:45 |
| Civil Twilight Begin | 07:20 |
| Sunrise | 07:52 |
| Sunset | 17:16 |
| Civil Twilight End | 17:48 |
| Nautical Twilight End | 18:23 |
| Astronomical Twilight End | 18:58 |
| Moon Illumination | 26.85% |