| Geyser | 1973-02-18 |
|---|---|
| Grand | 1440 |
| Lion | 0810, 1201, 1518 |
| Old Faithful | 0820 long, 0941 short, 1024 long, 1152 long, 1259 short, 1344 long, 1458 short, 1544 long, 1703 long |
| Values for Old Faithful Area | 1973-02-18 |
|---|---|
| Astronomical Twilight Begin | 05:41 |
| Nautical Twilight Begin | 06:14 |
| Civil Twilight Begin | 06:48 |
| Sunrise | 07:18 |
| Sunset | 17:56 |
| Civil Twilight End | 18:25 |
| Nautical Twilight End | 18:59 |
| Astronomical Twilight End | 19:33 |
| Moon Illumination | 99.03% |