| Geyser | 1981-02-17 |
|---|---|
| Africa | 1539:47, 1636:25, 1737:21 |
| Echinus | 0816 ie, 0901:25 ie, 0945:48, 1021:28, 1103:13 ie, 1142:23, 1221:14, 1254:43 ie, 1329:34, 1355:15 |
| Values for Old Faithful Area | 1981-02-17 |
|---|---|
| Astronomical Twilight Begin | 05:42 |
| Nautical Twilight Begin | 06:16 |
| Civil Twilight Begin | 06:50 |
| Sunrise | 07:19 |
| Sunset | 17:54 |
| Civil Twilight End | 18:24 |
| Nautical Twilight End | 18:58 |
| Astronomical Twilight End | 19:32 |
| Moon Illumination | 97.05% |