| Geyser | 1972-01-17 |
|---|---|
| Old Faithful | 1050 long, 1201 short, 1251 long, 1408 long, 1521 long |
| Vault | 0000-2359, 0000-2359 |
| Values for Old Faithful Area | 1972-01-17 |
|---|---|
| Astronomical Twilight Begin | 06:12 |
| Nautical Twilight Begin | 06:47 |
| Civil Twilight Begin | 07:23 |
| Sunrise | 07:55 |
| Sunset | 17:11 |
| Civil Twilight End | 17:43 |
| Nautical Twilight End | 18:19 |
| Astronomical Twilight End | 18:54 |
| Moon Illumination | 0.82% |