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DARK SKY INDEX -
The dark sky table shows the Pacific Daylight Saving Time (PDT) 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 5- 1 20:16SS 22:13TE 1:49MR 4: 1TS 5:56SR 10:25MS 3:35VT 5- 2 20:17SS 22:15TE 2:32MR 3:58TS 5:55SR 11:28MS 4:18VT 5- 3 20:19SS 22:16TE 3: 7MR 3:57TS 5:54SR 4:51VT 5- 4 12:31MS 20:21SS 22:19TE 3:35MR 3:54TS 5:52SR 5:16VT 5- 5 13:36MS 20:22SS 22:21TE 3:52TS 4: 0MR 5:50SR 5:30VT 5- 6 14:38MS 20:22SS 22:22TE 3:49TS 4:20MR 5:49SR 5:27VT 5- 7 15:41MS 20:25SS 22:23TE 3:47TS 4:40MR 5:48SR 5:24VT 5- 8 16:43MS 20:25SS 22:25TE 3:46TS 5: 0MR 5:46SR 5:20VT 5- 9 17:46MS 20:27SS 22:28TE 3:45TS 5:19MR 5:46SR 5:16VT 5-10 18:49MS 20:28SS 22:30TE 3:43TS 5:40MR 5:43SR 5:13VT 5-11 19:55MS 20:28SS 22:31TE 3:40TS 5:43SR 6: 4MR 5: 9VT 5-12 20:31SS 21: 1MS 22:34TE 3:39TS 5:41SR 6:34MR 5: 4VT 5-13 20:31SS 22:10MS 22:36TE 3:37TS 5:40SR 7:10MR 5: 0VT 5-14 20:32SS 22:37TE 23:15MS 3:34TS 5:40SR 7:55MR 4:19VT 5-15 20:34SS 22:40TE 0:15MS 3:32TS 5:39SR 8:49MR 3:17VT 5-16 20:34SS 22:40TE 1: 7MS 3:31TS 5:37SR 9:53MR 2:23VT 5-17 20:36SS 22:43TE 1:52MS 3:30TS 5:35SR 11: 6MR 1:37VT 5-18 20:37SS 22:45TE 2:28MS 3:28TS 5:34SR 1: 0VT 5-19 12:21MR 20:38SS 22:46TE 2:58MS 3:25TS 5:34SR 0:26VT 5-20 13:37MR 20:40SS 22:49TE 3:25TS 3:25MS 5:33SR 0: 0VT 5-21 14:55MR 20:40SS 22:49TE 3:22TS 3:49MS 5:31SR 0: 0VT 5-22 16:13MR 20:42SS 22:52TE 3:20TS 4:13MS 5:31SR 0: 0VT 5-23 17:31MR 20:43SS 22:53TE 3:19TS 4:40MS 5:31SR 0: 0VT 5-24 18:51MR 20:43SS 22:55TE 3:17TS 5: 7MS 5:30SR 0: 0VT 5-25 20:10MR 20:45SS 22:57TE 3:16TS 5:28SR 5:41MS 0: 0VT 5-26 20:46SS 21:25MR 22:58TE 3:15TS 5:28SR 6:22MS 0: 0VT 5-27 20:46SS 22:36MR 23: 1TE 3:13TS 5:26SR 7:10MS 0: 0VT 5-28 20:47SS 23: 1TE 23:37MR 3:12TS 5:26SR 8: 7MS 0:35VT 5-29 20:49SS 23: 4TE 0:27MR 3:10TS 5:25SR 9:11MS 1:22VT 5-30 20:49SS 23: 4TE 1: 7MR 3:10TS 5:25SR 10:16MS 2: 2VT 5-31 20:51SS 23: 7TE 1:37MR 3: 9TS 5:25SR 11:22MS 2:30VT
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.