| Geyser | 1975-05-24 |
|---|---|
| Africa | 1800 |
| Beehive | 1557 |
| Beehive's Indicator | 1513 ie |
| Emerald Spring | 1800 |
| Great Fountain | 1104 |
| Harding | 2300 A |
| Riverside | 1530 |
| Round | 0849, 1847 |
| Values for Old Faithful Area | 1975-05-24 |
|---|---|
| Astronomical Twilight Begin | 03:33 |
| Nautical Twilight Begin | 04:27 |
| Civil Twilight Begin | 05:12 |
| Sunrise | 05:47 |
| Sunset | 20:52 |
| Civil Twilight End | 21:27 |
| Nautical Twilight End | 22:12 |
| Astronomical Twilight End | 23:06 |
| Moon Illumination | 98.75% |