| Geyser | 1972-09-28 |
|---|---|
| Beehive | 1251 |
| Great Fountain | 1136 |
| Old Faithful | 0752 long, 0902 long, 1013 long, 1129 long, 1237 long, 1350 long, 1459 long, 1604 long, 1716 short, 1812 long |
| Values for Old Faithful Area | 1972-09-28 |
|---|---|
| Astronomical Twilight Begin | 05:40 |
| Nautical Twilight Begin | 06:15 |
| Civil Twilight Begin | 06:49 |
| Sunrise | 07:18 |
| Sunset | 19:09 |
| Civil Twilight End | 19:38 |
| Nautical Twilight End | 20:12 |
| Astronomical Twilight End | 20:46 |
| Moon Illumination | 67.51% |