| Geyser | 1972-01-15 |
|---|---|
| Old Faithful | 0956 long, 1106 long, 1224 short, 1311 long, 1437 short, 1522 long, 1646 |
| Values for Old Faithful Area | 1972-01-15 |
|---|---|
| Astronomical Twilight Begin | 06:13 |
| Nautical Twilight Begin | 06:48 |
| Civil Twilight Begin | 07:24 |
| Sunrise | 07:56 |
| Sunset | 17:08 |
| Civil Twilight End | 17:41 |
| Nautical Twilight End | 18:17 |
| Astronomical Twilight End | 18:51 |
| Moon Illumination | 1.57% |