| Geyser | 1977-04-27 |
|---|---|
| Artemisia | 1500 |
| Atomizer | 1514 min |
| Beehive | 1450 |
| Beehive's Indicator | 0930 |
| Castle | 1405 ie |
| Old Faithful | 0923, 1043 long, 1207 long, 1314 long, 1422 long, 1541 long |
| Penta | 1600 A min |
| Rift | 0227 |
| Values for Old Faithful Area | 1977-04-27 |
|---|---|
| Astronomical Twilight Begin | 04:26 |
| Nautical Twilight Begin | 05:08 |
| Civil Twilight Begin | 05:47 |
| Sunrise | 06:19 |
| Sunset | 20:22 |
| Civil Twilight End | 20:54 |
| Nautical Twilight End | 21:32 |
| Astronomical Twilight End | 22:15 |
| Moon Illumination | 56.46% |