| Geyser | 1976-05-11 |
|---|---|
| Grand | 1227 |
| Lion | 1002 ie, 1249 ie, 1648 |
| Old Faithful | 0804 short, 0852 long, 1014 short, 1059 long, 1217 short, 1309 long, 1401, 1530 long, 1647 short, 1739 long |
| Riverside | 1121 |
| Round | 1237 |
| Values for Old Faithful Area | 1976-05-11 |
|---|---|
| Astronomical Twilight Begin | 03:56 |
| Nautical Twilight Begin | 04:44 |
| Civil Twilight Begin | 05:26 |
| Sunrise | 05:59 |
| Sunset | 20:39 |
| Civil Twilight End | 21:12 |
| Nautical Twilight End | 21:54 |
| Astronomical Twilight End | 22:43 |
| Moon Illumination | 90.21% |