| Geyser | 1971-10-23 |
|---|---|
| Beehive | 1433 |
| Castle | 0838 ? ie, 1400 ie |
| Grand | 0845, 1607 |
| Lion | 1034, 1530 |
| North Goggle | 0846 |
| Old Faithful | 0918 short, 1009 long, 1125 long, 1331 long, 1442 short, 1538 long, 1650 short |
| Vault | 1655 |
| Values for Old Faithful Area | 1971-10-23 |
|---|---|
| Astronomical Twilight Begin | 06:11 |
| Nautical Twilight Begin | 06:44 |
| Civil Twilight Begin | 07:18 |
| Sunrise | 07:48 |
| Sunset | 18:27 |
| Civil Twilight End | 18:56 |
| Nautical Twilight End | 19:30 |
| Astronomical Twilight End | 20:04 |
| Moon Illumination | 13.58% |