| Geyser | 1975-12-18 |
|---|---|
| Beehive | 1211 |
| Castle | 1400 |
| Old Faithful | 1053 long, 1201 long, 1317 long, 1430 long, 1547 |
| Plume | 1010 |
| Values for Old Faithful Area | 1975-12-18 |
|---|---|
| Astronomical Twilight Begin | 06:09 |
| Nautical Twilight Begin | 06:44 |
| Civil Twilight Begin | 07:21 |
| Sunrise | 07:54 |
| Sunset | 16:45 |
| Civil Twilight End | 17:18 |
| Nautical Twilight End | 17:55 |
| Astronomical Twilight End | 18:30 |
| Moon Illumination | 99.88% |