| Geyser | 1973-02-14 |
|---|---|
| Castle | 1520 |
| Grand | 1220 |
| Old Faithful | 0832 short, 0912 long, 1023 short, 1117 long, 1224 short, 1328 long, 1435 short, 1528 long, 1637 short |
| Riverside | 1315 |
| Values for Old Faithful Area | 1973-02-14 |
|---|---|
| Astronomical Twilight Begin | 05:46 |
| Nautical Twilight Begin | 06:20 |
| Civil Twilight Begin | 06:54 |
| Sunrise | 07:24 |
| Sunset | 17:50 |
| Civil Twilight End | 18:20 |
| Nautical Twilight End | 18:54 |
| Astronomical Twilight End | 19:28 |
| Moon Illumination | 87.76% |