| Geyser | 1975-01-17 |
|---|---|
| Beehive | 1120 |
| Old Faithful | 1044 short, 1128 long, 1244 short, 1331 short, 1423 long, 1534 long, 1641 |
| Values for Old Faithful Area | 1975-01-17 |
|---|---|
| Astronomical Twilight Begin | 06:12 |
| Nautical Twilight Begin | 06:47 |
| Civil Twilight Begin | 07:23 |
| Sunrise | 07:55 |
| Sunset | 17:11 |
| Civil Twilight End | 17:43 |
| Nautical Twilight End | 18:19 |
| Astronomical Twilight End | 18:54 |
| Moon Illumination | 20.01% |