| Geyser | 1977-02-13 |
|---|---|
| Beehive | 1342 |
| Old Faithful | 0900 short, 1013 long, 1124 long, 1235 long, 1346 short, 1453, 1610 long, 1713 long |
| Values for Old Faithful Area | 1977-02-13 |
|---|---|
| Astronomical Twilight Begin | 05:47 |
| Nautical Twilight Begin | 06:21 |
| Civil Twilight Begin | 06:55 |
| Sunrise | 07:25 |
| Sunset | 17:49 |
| Civil Twilight End | 18:19 |
| Nautical Twilight End | 18:53 |
| Astronomical Twilight End | 19:27 |
| Moon Illumination | 26.67% |