| Geyser | 1975-01-13 |
|---|---|
| Old Faithful | 0938 long, 1059 short, 1139 long, 1250 short, 1400 short, 1503 long, 1621 short, 1711 long, 1821 long, 1937 short, 2019 long, 2148 |
| Values for Old Faithful Area | 1975-01-13 |
|---|---|
| Astronomical Twilight Begin | 06:13 |
| Nautical Twilight Begin | 06:48 |
| Civil Twilight Begin | 07:24 |
| Sunrise | 07:57 |
| Sunset | 17:06 |
| Civil Twilight End | 17:39 |
| Nautical Twilight End | 18:15 |
| Astronomical Twilight End | 18:50 |
| Moon Illumination | 0.71% |