| Geyser | 1973-01-04 |
|---|---|
| Grand | 1310 |
| Old Faithful | 0845 long, 0948 short, 1057, 1257 short, 1351 long, 1508 long, 1619 long |
| Values for Old Faithful Area | 1973-01-04 |
|---|---|
| Astronomical Twilight Begin | 06:14 |
| Nautical Twilight Begin | 06:50 |
| Civil Twilight Begin | 07:26 |
| Sunrise | 07:59 |
| Sunset | 16:57 |
| Civil Twilight End | 17:30 |
| Nautical Twilight End | 18:06 |
| Astronomical Twilight End | 18:42 |
| Moon Illumination | 0.13% |