| Geyser | 1973-05-17 |
|---|---|
| Castle | 1000 |
| Guardian | 1800 |
| Myriad | 1710 |
| Old Faithful | 0831, 0918, 1051 long, 1153 long, 1306 long, 1411 long, 1526 long, 1614 long, 1725, 1834 short |
| Values for Old Faithful Area | 1973-05-17 |
|---|---|
| Astronomical Twilight Begin | 03:45 |
| Nautical Twilight Begin | 04:35 |
| Civil Twilight Begin | 05:19 |
| Sunrise | 05:53 |
| Sunset | 20:46 |
| Civil Twilight End | 21:20 |
| Nautical Twilight End | 22:03 |
| Astronomical Twilight End | 22:54 |
| Moon Illumination | 100% |