| Geyser | 1975-05-27 |
|---|---|
| Beehive | 1246 |
| Beehive's Indicator | 1225 |
| Castle | 1655 |
| Grand | 1309, 2111 |
| Lion | 0707 ie, 1054 maj, 1234, 1423, 2012 |
| Oblong | 0736 |
| Riverside | 0950 |
| Values for Old Faithful Area | 1975-05-27 |
|---|---|
| Astronomical Twilight Begin | 03:28 |
| Nautical Twilight Begin | 04:24 |
| Civil Twilight Begin | 05:09 |
| Sunrise | 05:44 |
| Sunset | 20:55 |
| Civil Twilight End | 21:30 |
| Nautical Twilight End | 22:16 |
| Astronomical Twilight End | 23:11 |
| Moon Illumination | 95.29% |