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DARK SKY INDEX
The dark sky table shows the Pacific Standard Time (PST) times for sunset, astronomical twilight ends, astronomical twilight starts, sunrise, moonrise, moonset and total moon-free, twilight-free viewing time for Portland, Oregon, U.S.A. (Longitude: West 122.68 degrees & Latitude: North 45.52 degrees). Moon-free, twilight-free viewing time is the best time to observer deep sky objects because the moon light and twilight will not interfere with observing these faint objects.
Format: ##:##SS = Sunset ##:##TE = Twilight Ends ##:##MR = Moonrise ##:##SR = Sun Rise ##:##TS = Twilight Starts ##:##MS = Moonset ##:##VT = Moon-free, Twilight-free Viewing Time Date Sunset Twilight Ends Twilight Starts Sun Rise Viewing Time 12- 1 12: 0MR 16:28SS 18:13TE 21:38MS 5:46TS 7:31SR 8: 7VT 12- 2 12:31MR 16:28SS 18:13TE 22:40MS 5:46TS 7:33SR 7: 6VT 12- 3 12:58MR 16:27SS 18:13TE 23:42MS 5:48TS 7:34SR 6: 5VT 12- 4 13:22MR 16:27SS 18:13TE 0:46MS 5:49TS 7:34SR 5: 3VT 12- 5 13:46MR 16:27SS 18:13TE 1:52MS 5:49TS 7:35SR 3:57VT 12- 6 14:10MR 16:27SS 18:13TE 2:58MS 5:49TS 7:37SR 2:50VT 12- 7 14:36MR 16:27SS 18:13TE 4:10MS 5:50TS 7:37SR 1:40VT 12- 8 15: 4MR 16:27SS 18:13TE 5:24MS 5:52TS 7:39SR 0:28VT 12- 9 15:37MR 16:25SS 18:13TE 5:52TS 6:39MS 7:40SR 0: 0VT 12-10 16:19MR 16:25SS 18:13TE 5:54TS 7:40SR 7:54MS 0: 0VT 12-11 16:27SS 17: 8MR 18:13TE 5:55TS 7:41SR 9: 3MS 0: 0VT 12-12 16:27SS 18: 8MR 18:13TE 5:55TS 7:43SR 10: 4MS 0: 0VT 12-13 16:27SS 18:13TE 19:19MR 5:55TS 7:43SR 10:53MS 1: 5VT 12-14 16:27SS 18:13TE 20:32MR 5:56TS 7:43SR 11:34MS 2:19VT 12-15 16:27SS 18:15TE 21:49MR 5:56TS 7:45SR 3:34VT 12-16 12: 7MS 16:27SS 18:15TE 23: 2MR 5:58TS 7:45SR 4:47VT 12-17 12:37MS 16:28SS 18:15TE 0:15MR 5:58TS 7:46SR 6: 0VT 12-18 13: 3MS 16:28SS 18:16TE 1:25MR 5:58TS 7:46SR 7: 8VT 12-19 13:28MS 16:28SS 18:16TE 2:32MR 6: 0TS 7:46SR 8:16VT 12-20 13:52MS 16:28SS 18:16TE 3:39MR 6: 0TS 7:48SR 9:22VT 12-21 14:19MS 16:30SS 18:16TE 4:45MR 6: 1TS 7:48SR 10:28VT 12-22 14:49MS 16:30SS 18:17TE 5:49MR 6: 1TS 7:49SR 11:31VT 12-23 15:22MS 16:31SS 18:17TE 6: 1TS 6:49MR 7:49SR 11:44VT 12-24 16: 1MS 16:31SS 18:19TE 6: 1TS 7:46MR 7:49SR 11:42VT 12-25 16:31SS 16:45MS 18:19TE 6: 1TS 7:49SR 8:37MR 11:42VT 12-26 16:32SS 17:36MS 18:19TE 6: 3TS 7:49SR 9:22MR 11:43VT 12-27 16:32SS 18:21TE 18:31MS 6: 3TS 7:49SR 10: 0MR 11:31VT 12-28 16:34SS 18:21TE 19:28MS 6: 3TS 7:49SR 10:33MR 10:34VT 12-29 16:34SS 18:22TE 20:28MS 6: 3TS 7:49SR 11: 1MR 9:34VT 12-30 16:36SS 18:22TE 21:31MS 6: 4TS 7:50SR 11:25MR 8:32VT 12-31 16:37SS 18:23TE 22:32MS 6: 4TS 7:50SR 11:49MR 7:31VT
This Dark Sky table may print better in landscape orientation. Also, when printing using Netscape check the Black Text option in the File menu, Page Setup... menu in order to print the white text. This Dark Sky table was created by Dave Heider's Dark Sky DOS program. Download the Dark Sky DOS program to create your own unique Dark Sky tables for your location and time of observing.