| Geyser | 1971-05-28 |
|---|---|
| Beehive | 1126 |
| Castle | 0800 ie |
| Grand | 0820 ie |
| North Goggle | 0900 |
| Old Faithful | 0850 short, 0957 short, 1109 long, 1214 short, 1325 short, 1411 long, 1534 short, 1638 long |
| Riverside | 1230 |
| Values for Old Faithful Area | 1971-05-28 |
|---|---|
| Astronomical Twilight Begin | 03:27 |
| Nautical Twilight Begin | 04:23 |
| Civil Twilight Begin | 05:08 |
| Sunrise | 05:44 |
| Sunset | 20:56 |
| Civil Twilight End | 21:31 |
| Nautical Twilight End | 22:17 |
| Astronomical Twilight End | 23:13 |
| Moon Illumination | 16.01% |