| Geyser | 1973-01-26 |
|---|---|
| Old Faithful | 0929 long, 1042 short, 1130 long, 1240 short, 1334 long, 1446 short, 1533 long, 1642 long, 1749 short |
| Values for Old Faithful Area | 1973-01-26 |
|---|---|
| Astronomical Twilight Begin | 06:06 |
| Nautical Twilight Begin | 06:41 |
| Civil Twilight Begin | 07:16 |
| Sunrise | 07:47 |
| Sunset | 17:24 |
| Civil Twilight End | 17:55 |
| Nautical Twilight End | 18:30 |
| Astronomical Twilight End | 19:05 |
| Moon Illumination | 49.8% |