| Geyser | 1973-01-10 |
|---|---|
| Beehive | 1406 |
| Castle | 1415 |
| Grand | 1205 |
| Old Faithful | 0908 short, 1003 long, 1123 long, 1235 short, 1314 long, 1435 short, 1527 long, 1642 long |
| Riverside | 1405 |
| Round | 1510 |
| Values for Old Faithful Area | 1973-01-10 |
|---|---|
| Astronomical Twilight Begin | 06:14 |
| Nautical Twilight Begin | 06:49 |
| Civil Twilight Begin | 07:25 |
| Sunrise | 07:58 |
| Sunset | 17:03 |
| Civil Twilight End | 17:36 |
| Nautical Twilight End | 18:12 |
| Astronomical Twilight End | 18:47 |
| Moon Illumination | 29.54% |