| Geyser | 1975-05-26 |
|---|---|
| Beehive | 1348 |
| Beehive's Indicator | 1335 |
| Castle | 1010, 2013 |
| Grand | 0740, 1545 ie |
| Ledge | 1240 |
| Lion | 0615 ie, 0725 ie, 1006, 1051 ie |
| Riverside | 0936, 1526 |
| Valentine | 1240 |
| Values for Old Faithful Area | 1975-05-26 |
|---|---|
| Astronomical Twilight Begin | 03:30 |
| Nautical Twilight Begin | 04:25 |
| Civil Twilight Begin | 05:10 |
| Sunrise | 05:45 |
| Sunset | 20:54 |
| Civil Twilight End | 21:29 |
| Nautical Twilight End | 22:15 |
| Astronomical Twilight End | 23:10 |
| Moon Illumination | 98.76% |