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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 3- 1 17:58SS 19:37TE 0:50MS 5: 5TS 6:46SR 10:36MR 4:15VT 3- 2 17:58SS 19:38TE 1:58MS 5: 4TS 6:45SR 11:18MR 3: 5VT 3- 3 18: 0SS 19:40TE 3: 5MS 5: 3TS 6:43SR 1:57VT 3- 4 12:10MR 18: 1SS 19:42TE 4: 7MS 5: 1TS 6:40SR 0:53VT 3- 5 13:13MR 18: 2SS 19:43TE 4:58TS 5: 3MS 6:39SR 0: 0VT 3- 6 14:25MR 18: 4SS 19:45TE 4:56TS 5:48MS 6:37SR 0: 0VT 3- 7 15:43MR 18: 6SS 19:46TE 4:55TS 6:26MS 6:34SR 0: 0VT 3- 8 17: 2MR 18: 7SS 19:47TE 4:52TS 6:34SR 7: 0MS 0: 0VT 3- 9 18: 7SS 18:22MR 19:49TE 4:50TS 6:31SR 7:28MS 0: 0VT 3-10 18:10SS 19:40MR 19:49TE 4:49TS 6:30SR 7:55MS 0: 0VT 3-11 18:10SS 19:52TE 20:55MR 4:48TS 6:28SR 8:22MS 1: 2VT 3-12 18:13SS 19:52TE 22: 7MR 4:46TS 6:25SR 8:51MS 2:14VT 3-13 18:13SS 19:55TE 23:17MR 4:43TS 6:24SR 9:22MS 3:22VT 3-14 18:15SS 19:55TE 0:25MR 4:41TS 6:22SR 9:56MS 4:29VT 3-15 18:16SS 19:57TE 1:28MR 4:40TS 6:19SR 10:34MS 5:30VT 3-16 18:17SS 19:58TE 2:25MR 4:37TS 6:18SR 11:19MS 6:26VT 3-17 18:19SS 20: 0TE 3:16MR 4:35TS 6:16SR 7:16VT 3-18 12:10MS 18:19SS 20: 1TE 4: 0MR 4:34TS 6:15SR 7:58VT 3-19 13: 6MS 18:22SS 20: 2TE 4:31TS 4:37MR 6:13SR 8:29VT 3-20 14: 4MS 18:22SS 20: 4TE 4:30TS 5:10MR 6:10SR 8:25VT 3-21 15: 6MS 18:23SS 20: 6TE 4:26TS 5:37MR 6: 9SR 8:20VT 3-22 16: 7MS 18:25SS 20: 7TE 4:25TS 6: 3MR 6: 7SR 8:17VT 3-23 17:10MS 18:27SS 20: 8TE 4:22TS 6: 4SR 6:25MR 8:14VT 3-24 18:15MS 18:28SS 20:10TE 4:20TS 6: 3SR 6:49MR 8:10VT 3-25 18:30SS 19:19MS 20:12TE 4:19TS 6: 1SR 7:11MR 8: 7VT 3-26 18:31SS 20:13TE 20:25MS 4:16TS 5:58SR 7:37MR 7:51VT 3-27 18:31SS 20:15TE 21:32MS 4:15TS 5:58SR 8: 3MR 6:42VT 3-28 18:34SS 20:16TE 22:43MS 4:13TS 5:55SR 8:37MR 5:29VT 3-29 18:34SS 20:17TE 23:52MS 4:10TS 5:54SR 9:15MR 4:18VT 3-30 18:36SS 20:19TE 0:58MS 4: 9TS 5:52SR 10: 3MR 3:10VT 3-31 18:37SS 20:21TE 2: 1MS 4: 5TS 5:49SR 11: 1MR 2: 4VT
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.