| Geyser | 1981-07-28 |
|---|---|
| Bear Den | 0800 ie, 1800 ie |
| Constant | 1136 |
| Dark Cavern | 1314:13, 1315:29, 1317:51, 1319:20, 1326, 1327:50, 1329:10, 1330:22, 1331:44, 1333:11, 1334:34, 1336:34, 1338:02, 1339:32, 1341:32, 1342:54, 1344, 1346:18, 1347:58, 1349:37, 1355:57, 1357:46, 1358:58, 1400:11, 1401:29, 1402:53, 1404:19, 1405:44, 1407:23, 1408:50, 1410:26, 1412:22, 1413:48, 1415:53, 1417:26, 1424, 1426:04, 1427:14 |
| Echinus | 0905, 1448 |
| Morning | 0500, 1025, 2100 |
| Sunday | 1129, 1138:40, 1145:54, 1155:00, 1202:35, 1209:35, 1217:25, 1225:10, 1232:50 |
| Valentine | 0800 ie, 1800 ie |
| Whirligig | 1023, 1056, 1134, 1213, 1256, 1345, 1434, 1549 |
| Values for Old Faithful Area | 1981-07-28 |
|---|---|
| Astronomical Twilight Begin | 03:59 |
| Nautical Twilight Begin | 04:49 |
| Civil Twilight Begin | 05:32 |
| Sunrise | 06:06 |
| Sunset | 20:53 |
| Civil Twilight End | 21:27 |
| Nautical Twilight End | 22:09 |
| Astronomical Twilight End | 22:59 |
| Moon Illumination | 11.02% |