| Geyser | 1972-01-01 |
|---|---|
| Old Faithful | 0943 short, 1025 long, 1143 short, 1227 long, 1340 short, 1425 long, 1540 short, 1622 |
| Values for Old Faithful Area | 1972-01-01 |
|---|---|
| Astronomical Twilight Begin | 06:14 |
| Nautical Twilight Begin | 06:49 |
| Civil Twilight Begin | 07:26 |
| Sunrise | 07:59 |
| Sunset | 16:53 |
| Civil Twilight End | 17:26 |
| Nautical Twilight End | 18:03 |
| Astronomical Twilight End | 18:38 |
| Moon Illumination | 99.75% |