| Geyser | 1973-05-04 |
|---|---|
| Ebony | 2000 |
| Guardian | 2000 |
| Old Faithful | 0852 long, 0958 long, 1109 long, 1214 long, 1323 long, 1430 long, 1538 short, 1641 long, 1756 short |
| Values for Old Faithful Area | 1973-05-04 |
|---|---|
| Astronomical Twilight Begin | 04:11 |
| Nautical Twilight Begin | 04:56 |
| Civil Twilight Begin | 05:36 |
| Sunrise | 06:09 |
| Sunset | 20:31 |
| Civil Twilight End | 21:03 |
| Nautical Twilight End | 21:43 |
| Astronomical Twilight End | 22:28 |
| Moon Illumination | 2.79% |