| Geyser | 1972-10-31 |
|---|---|
| Beehive | 1052 |
| Castle | 1315 ie |
| Grand | 1415 |
| Old Faithful | 1004, 1109, 1223, 1307, 1520, 1628, 1733 |
| Riverside | 1515 |
| Values for Old Faithful Area | 1972-10-31 |
|---|---|
| Astronomical Twilight Begin | 05:21 |
| Nautical Twilight Begin | 05:55 |
| Civil Twilight Begin | 06:29 |
| Sunrise | 06:59 |
| Sunset | 17:13 |
| Civil Twilight End | 17:44 |
| Nautical Twilight End | 18:18 |
| Astronomical Twilight End | 18:52 |
| Moon Illumination | 28.73% |