| Geyser | 1977-01-08 |
|---|---|
| Old Faithful | 0805, 0927, 1038, 1145, 1254 long, 1410 long, 1518 long, 1631 long, 1753 long |
| Plume | 1115, 1139, 1205, 1254 |
| Values for Old Faithful Area | 1977-01-08 |
|---|---|
| Astronomical Twilight Begin | 06:14 |
| Nautical Twilight Begin | 06:49 |
| Civil Twilight Begin | 07:26 |
| Sunrise | 07:58 |
| Sunset | 17:01 |
| Civil Twilight End | 17:34 |
| Nautical Twilight End | 18:10 |
| Astronomical Twilight End | 18:45 |
| Moon Illumination | 91.96% |