| Geyser | 1973-01-17 |
|---|---|
| Beehive | 1417 |
| Castle | 0700 |
| Old Faithful | 0851 short, 0931 long, 1051 short, 1133 long, 1252 short, 1335 long, 1446 long, 1555 short, 1647 long |
| Values for Old Faithful Area | 1973-01-17 |
|---|---|
| Astronomical Twilight Begin | 06:12 |
| Nautical Twilight Begin | 06:47 |
| Civil Twilight Begin | 07:22 |
| Sunrise | 07:54 |
| Sunset | 17:12 |
| Civil Twilight End | 17:44 |
| Nautical Twilight End | 18:20 |
| Astronomical Twilight End | 18:54 |
| Moon Illumination | 96.4% |