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DARK SKY INDEX - New

June 2012 Dark Sky Observing Time

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

 6- 1  17:55MR 20:52SS         23: 8TE          3: 7TS  3:50MS  5:24SR          0: 0VT 
 6- 2  19:13MR 20:52SS         23:10TE          3: 5TS  4:39MS  5:24SR          0: 0VT 
 6- 3  20:25MR 20:53SS         23:12TE          3: 4TS          5:22SR  5:35MS  0: 0VT 
 6- 4          20:55SS 21:28MR 23:13TE          3: 4TS          5:22SR  6:41MS  0: 0VT 
 6- 5          20:55SS 22:22MR 23:15TE          3: 2TS          5:22SR  7:54MS  0: 0VT 
 6- 6          20:55SS 23: 6MR 23:16TE          3: 1TS          5:22SR  9: 7MS  0: 0VT 
 6- 7          20:57SS         23:16TE 23:40MR  3: 1TS          5:22SR 10:18MS  0:23VT 
 6- 8          20:57SS         23:17TE  0:10MR  3: 1TS          5:22SR 11:26MS  0:53VT 
 6- 9          20:58SS         23:19TE  0:38MR  3: 0TS          5:20SR          1:18VT 
 6-10  12:33MS 20:58SS         23:19TE  1: 1MR  3: 0TS          5:20SR          1:42VT 
 6-11  13:37MS 20:58SS         23:21TE  1:25MR  2:58TS          5:20SR          2: 4VT 
 6-12  14:40MS 21: 0SS         23:22TE  1:49MR  2:58TS          5:20SR          2:27VT 
 6-13  15:40MS 21: 0SS         23:22TE  2:16MR  2:58TS          5:20SR          2:54VT 
 6-14  16:40MS 21: 1SS         23:22TE  2:46MR  2:58TS          5:20SR          3:23VT 
 6-15  17:40MS 21: 1SS         23:23TE          2:58TS  3:19MR  5:20SR          3:34VT 
 6-16  18:38MS 21: 1SS         23:23TE          2:58TS  3:58MR  5:20SR          3:34VT 
 6-17  19:32MS 21: 1SS         23:25TE          2:58TS  4:43MR  5:20SR          3:32VT 
 6-18  20:22MS 21: 1SS         23:25TE          2:58TS          5:20SR  5:34MR  3:32VT 
 6-19          21: 1SS 21: 7MS 23:25TE          2:58TS          5:20SR  6:31MR  3:32VT 
 6-20          21: 1SS 21:47MS 23:25TE          2:58TS          5:22SR  7:31MR  3:32VT 
 6-21          21: 2SS 22:22MS 23:25TE          2:58TS          5:22SR  8:36MR  3:33VT 
 6-22          21: 2SS 22:52MS 23:25TE          2:58TS          5:22SR  9:41MR  3:33VT 
 6-23          21: 2SS 23:19MS 23:25TE          3: 0TS          5:22SR 10:49MR  3:34VT 
 6-24          21: 2SS         23:25TE 23:46MS  3: 0TS          5:22SR 11:58MR  3:13VT 
 6-25          21: 2SS         23:25TE  0:13MS  3: 1TS          5:22SR          2:48VT 
 6-26  13: 8MR 21: 2SS         23:25TE  0:40MS  3: 1TS          5:24SR          2:21VT 
 6-27  14:21MR 21: 2SS         23:25TE  1:10MS  3: 1TS          5:24SR          1:51VT 
 6-28  15:36MR 21: 2SS         23:25TE  1:46MS  3: 2TS          5:25SR          1:16VT 
 6-29  16:49MR 21: 2SS         23:23TE  2:28MS  3: 4TS          5:25SR          0:36VT 
 6-30  18: 4MR 21: 2SS         23:23TE          3: 4TS  3:19MS  5:25SR          0: 0VT 

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.