| Geyser | 1973-03-11 |
|---|---|
| Echinus | 1800 |
| Guardian | 1540 A |
| Ledge | 1600 ns |
| Old Faithful | 0921 short, 1009 long, 1117 long, 1228 long, 1345 long, 1452 short, 1536 long, 1648 short |
| Valentine | 1540 A |
| Veteran | 1800 |
| Values for Old Faithful Area | 1973-03-11 |
|---|---|
| Astronomical Twilight Begin | 05:05 |
| Nautical Twilight Begin | 05:39 |
| Civil Twilight Begin | 06:13 |
| Sunrise | 06:42 |
| Sunset | 18:24 |
| Civil Twilight End | 18:53 |
| Nautical Twilight End | 19:26 |
| Astronomical Twilight End | 20:00 |
| Moon Illumination | 43.1% |