| Geyser | 1970-05-22 |
|---|---|
| Castle | 1630 |
| Great Fountain | 2100 |
| Old Faithful | 0801 short, 0910 short, 1003 long, 1118 short, 1320 short, 1415 short, 1533 short, 1622 long |
| Riverside | 1121 |
| Values for Old Faithful Area | 1970-05-22 |
|---|---|
| Astronomical Twilight Begin | 03:36 |
| Nautical Twilight Begin | 04:29 |
| Civil Twilight Begin | 05:14 |
| Sunrise | 05:48 |
| Sunset | 20:51 |
| Civil Twilight End | 21:25 |
| Nautical Twilight End | 22:10 |
| Astronomical Twilight End | 23:03 |
| Moon Illumination | 98.46% |