| Geyser | 1973-02-07 |
|---|---|
| Old Faithful | 0140 short, 0244 short, 0331 long, 0452 long, 1019 long, 1124 long, 1231 long |
| Values for Old Faithful Area | 1973-02-07 |
|---|---|
| Astronomical Twilight Begin | 05:55 |
| Nautical Twilight Begin | 06:29 |
| Civil Twilight Begin | 07:03 |
| Sunrise | 07:34 |
| Sunset | 17:40 |
| Civil Twilight End | 18:11 |
| Nautical Twilight End | 18:45 |
| Astronomical Twilight End | 19:19 |
| Moon Illumination | 16.33% |