| Geyser | 1970-05-04 |
|---|---|
| Castle | 1525 |
| Old Faithful | 0824 long, 0939 short, 1034 long, 1143 long, 1311 short, 1349 long, 1512 short, 1610 long |
| Riverside | 1800 |
| Values for Old Faithful Area | 1970-05-04 |
|---|---|
| Astronomical Twilight Begin | 04:11 |
| Nautical Twilight Begin | 04:56 |
| Civil Twilight Begin | 05:37 |
| Sunrise | 06:09 |
| Sunset | 20:30 |
| Civil Twilight End | 21:02 |
| Nautical Twilight End | 21:43 |
| Astronomical Twilight End | 22:28 |
| Moon Illumination | 2.28% |