| Geyser | 1977-01-20 |
|---|---|
| Beehive | 0845 ie |
| Castle | 1120 ie |
| Depression | 1221, 1711 |
| Old Faithful | 0856 long, 1011 short, 1057 long, 1220 long, 1330 long, 1440 short, 1554 long, 1726 long, 1825 |
| Values for Old Faithful Area | 1977-01-20 |
|---|---|
| Astronomical Twilight Begin | 06:10 |
| Nautical Twilight Begin | 06:45 |
| Civil Twilight Begin | 07:21 |
| Sunrise | 07:52 |
| Sunset | 17:16 |
| Civil Twilight End | 17:47 |
| Nautical Twilight End | 18:23 |
| Astronomical Twilight End | 18:58 |
| Moon Illumination | 0.64% |