| Geyser | 1973-03-19 |
|---|---|
| Africa | 1633 |
| Beehive | 1239 |
| Fan-Norris | 1647 |
| Fireball | 1500 |
| Grand | 1335 |
| Ledge | 1458, 1800 |
| Old Faithful | 0835 short, 1039 short, 1124 long |
| Valentine | 0700 A, 1800 |
| Values for Old Faithful Area | 1973-03-19 |
|---|---|
| Astronomical Twilight Begin | 04:50 |
| Nautical Twilight Begin | 05:24 |
| Civil Twilight Begin | 05:58 |
| Sunrise | 06:27 |
| Sunset | 18:34 |
| Civil Twilight End | 19:03 |
| Nautical Twilight End | 19:37 |
| Astronomical Twilight End | 20:12 |
| Moon Illumination | 99.88% |