| Geyser | 1973-03-13 |
|---|---|
| Arsenic | 0915 |
| Bear Den | 1530 A |
| Blue | 1345-1600, 1612 |
| Ebony | 0920 min, 1009 min, 1055 |
| Ledge | 1647, 1800 |
| Old Faithful | 0847 long, 0952 long, 1108 short, 1223 long, 1340 long, 1443 long, 1550 short |
| Values for Old Faithful Area | 1973-03-13 |
|---|---|
| Astronomical Twilight Begin | 05:01 |
| Nautical Twilight Begin | 05:36 |
| Civil Twilight Begin | 06:09 |
| Sunrise | 06:38 |
| Sunset | 18:26 |
| Civil Twilight End | 18:55 |
| Nautical Twilight End | 19:29 |
| Astronomical Twilight End | 20:03 |
| Moon Illumination | 65.64% |