| Geyser | 1974-12-22 |
|---|---|
| Castle | 1308 |
| Dome | 0756, 0920, 1003, 1217, 1306 ie |
| Lion | 1644 ie |
| Old Faithful | 0754 long, 0907 short, 0956 long, 1111 long, 1221 long, 1328 long, 1437 short, 1542 long, 1648 long |
| Riverside | 1030 |
| Values for Old Faithful Area | 1974-12-22 |
|---|---|
| Astronomical Twilight Begin | 06:11 |
| Nautical Twilight Begin | 06:46 |
| Civil Twilight Begin | 07:23 |
| Sunrise | 07:56 |
| Sunset | 16:46 |
| Civil Twilight End | 17:20 |
| Nautical Twilight End | 17:57 |
| Astronomical Twilight End | 18:32 |
| Moon Illumination | 54.58% |