| Geyser | 1975-04-04 |
|---|---|
| Old Faithful | 0633, 0747 long, 0904 long, 1010 long, 1118 long, 1221 long, 1328 long, 1438 long, 1557 short, 1645 long, 1804 short, 1902 long, 2017 long, 2129 short, 2221 long |
| Values for Old Faithful Area | 1975-04-04 |
|---|---|
| Astronomical Twilight Begin | 05:17 |
| Nautical Twilight Begin | 05:54 |
| Civil Twilight Begin | 06:29 |
| Sunrise | 06:59 |
| Sunset | 19:53 |
| Civil Twilight End | 20:23 |
| Nautical Twilight End | 20:58 |
| Astronomical Twilight End | 21:35 |
| Moon Illumination | 42.94% |