| Geyser | 1975-01-29 |
|---|---|
| Beehive | 1538 |
| Old Faithful | 0938 short, 1033 long, 1155 short, 1243 long, 1405 short, 1449 long, 1602 short, 1659 long |
| Riverside | 1500 ie |
| Values for Old Faithful Area | 1975-01-29 |
|---|---|
| Astronomical Twilight Begin | 06:04 |
| Nautical Twilight Begin | 06:39 |
| Civil Twilight Begin | 07:14 |
| Sunrise | 07:45 |
| Sunset | 17:27 |
| Civil Twilight End | 17:58 |
| Nautical Twilight End | 18:33 |
| Astronomical Twilight End | 19:08 |
| Moon Illumination | 95.82% |