| Geyser | 1972-02-01 |
|---|---|
| Old Faithful | 1049 short, 1133 short, 1250 short, 1340 long, 1502 short, 1604 short |
| Values for Old Faithful Area | 1972-02-01 |
|---|---|
| Astronomical Twilight Begin | 06:02 |
| Nautical Twilight Begin | 06:36 |
| Civil Twilight Begin | 07:11 |
| Sunrise | 07:42 |
| Sunset | 17:31 |
| Civil Twilight End | 18:02 |
| Nautical Twilight End | 18:37 |
| Astronomical Twilight End | 19:11 |
| Moon Illumination | 96.4% |