| Geyser | 1977-02-09 |
|---|---|
| Beehive | 1040 |
| Castle | 1255 ie |
| Grand | 0921 ie |
| Lion | 0932 |
| Old Faithful | 0849 long, 1003 short, 1059 long, 1206 long, 1319 long, 1426 short, 1527 long, 1649 long |
| Spiteful | 1500 |
| Values for Old Faithful Area | 1977-02-09 |
|---|---|
| Astronomical Twilight Begin | 05:53 |
| Nautical Twilight Begin | 06:26 |
| Civil Twilight Begin | 07:01 |
| Sunrise | 07:31 |
| Sunset | 17:43 |
| Civil Twilight End | 18:13 |
| Nautical Twilight End | 18:48 |
| Astronomical Twilight End | 19:22 |
| Moon Illumination | 70.79% |