| Geyser | 1972-10-20 |
|---|---|
| Beehive | 1611 |
| Castle | 0930 |
| North Goggle | 1625 |
| Old Faithful | 0854, 1009, 1054, 1214, 1300, 1417, 1507, 1619, 1730 |
| Values for Old Faithful Area | 1972-10-20 |
|---|---|
| Astronomical Twilight Begin | 06:08 |
| Nautical Twilight Begin | 06:42 |
| Civil Twilight Begin | 07:15 |
| Sunrise | 07:45 |
| Sunset | 18:30 |
| Civil Twilight End | 19:00 |
| Nautical Twilight End | 19:33 |
| Astronomical Twilight End | 20:07 |
| Moon Illumination | 92.42% |