| Geyser | 1972-02-19 |
|---|---|
| Old Faithful | 0934 long, 1041, 1152 long, 1303 long, 1416 short, 1510 long, 1628 short, 1720 |
| Values for Old Faithful Area | 1972-02-19 |
|---|---|
| Astronomical Twilight Begin | 05:40 |
| Nautical Twilight Begin | 06:14 |
| Civil Twilight Begin | 06:48 |
| Sunrise | 07:17 |
| Sunset | 17:56 |
| Civil Twilight End | 18:26 |
| Nautical Twilight End | 19:00 |
| Astronomical Twilight End | 19:33 |
| Moon Illumination | 23.35% |