| Geyser | 1973-01-07 |
|---|---|
| Beehive | 1327 |
| Grand | 1322 |
| Old Faithful | 0928 short, 1019 long, 1133 long, 1237 short, 1326 long, 1449 short, 1534 long, 1643 |
| Values for Old Faithful Area | 1973-01-07 |
|---|---|
| Astronomical Twilight Begin | 06:14 |
| Nautical Twilight Begin | 06:49 |
| Civil Twilight Begin | 07:26 |
| Sunrise | 07:59 |
| Sunset | 17:00 |
| Civil Twilight End | 17:33 |
| Nautical Twilight End | 18:09 |
| Astronomical Twilight End | 18:44 |
| Moon Illumination | 6.7% |