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DARK SKY INDEX - New

June 2011 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          20:52SS 21: 6MS 23: 7TE          3: 7TS          5:25SR  5:58MR  4: 0VT 
 6- 2          20:52SS 21:58MS 23:10TE          3: 7TS          5:24SR  6:56MR  3:56VT 
 6- 3          20:52SS 22:43MS 23:10TE          3: 5TS          5:24SR  8: 3MR  3:55VT 
 6- 4          20:53SS         23:12TE 23:22MS  3: 4TS          5:22SR  9:12MR  3:42VT 
 6- 5          20:55SS         23:13TE 23:53MS  3: 4TS          5:22SR 10:25MR  3:10VT 
 6- 6          20:55SS         23:15TE  0:22MS  3: 2TS          5:22SR 11:37MR  2:40VT 
 6- 7          20:55SS         23:16TE  0:49MS  3: 1TS          5:22SR          2:12VT 
 6- 8  12:52MR 20:57SS         23:16TE  1:15MS  3: 1TS          5:22SR          1:46VT 
 6- 9  14: 7MR 20:58SS         23:17TE  1:40MS  3: 1TS          5:22SR          1:20VT 
 6-10  15:22MR 20:58SS         23:19TE  2:10MS  3: 0TS          5:20SR          0:49VT 
 6-11  16:38MR 20:58SS         23:19TE  2:43MS  3: 0TS          5:20SR          0:16VT 
 6-12  17:55MR 20:58SS         23:21TE          2:58TS  3:22MS  5:20SR          0: 0VT 
 6-13  19:10MR 21: 0SS         23:22TE          2:58TS  4:10MS  5:20SR          0: 0VT 
 6-14  20:16MR 21: 0SS         23:22TE          2:58TS  5: 5MS  5:20SR          0: 0VT 
 6-15          21: 1SS 21:13MR 23:22TE          2:58TS          5:20SR  6:10MS  0: 0VT 
 6-16          21: 1SS 21:58MR 23:23TE          2:58TS          5:20SR  7:19MS  0: 0VT 
 6-17          21: 1SS 22:37MR 23:25TE          2:58TS          5:20SR  8:27MS  0: 0VT 
 6-18          21: 1SS 23: 7MR 23:25TE          2:58TS          5:20SR  9:34MS  0: 0VT 
 6-19          21: 1SS         23:25TE 23:32MR  2:58TS          5:20SR 10:40MS  0: 7VT 
 6-20          21: 1SS         23:25TE 23:55MR  2:58TS          5:22SR 11:43MS  0:30VT 
 6-21          21: 2SS         23:25TE  0:16MR  2:58TS          5:22SR          0:51VT 
 6-22  12:46MS 21: 2SS         23:25TE  0:38MR  2:58TS          5:22SR          1:12VT 
 6-23  13:46MS 21: 2SS         23:25TE  1: 0MR  2:58TS          5:22SR          1:34VT 
 6-24  14:49MS 21: 2SS         23:25TE  1:23MR  3: 0TS          5:22SR          1:58VT 
 6-25  15:51MS 21: 2SS         23:25TE  1:51MR  3: 0TS          5:22SR          2:25VT 
 6-26  16:53MS 21: 2SS         23:25TE  2:22MR  3: 1TS          5:22SR          2:57VT 
 6-27  17:55MS 21: 2SS         23:25TE          3: 1TS  3: 1MR  5:24SR          3:35VT 
 6-28  18:55MS 21: 2SS         23:25TE          3: 1TS  3:49MR  5:24SR          3:36VT 
 6-29  19:51MS 21: 2SS         23:25TE          3: 2TS  4:45MR  5:25SR          3:37VT 
 6-30  20:38MS 21: 2SS         23:23TE          3: 4TS          5:25SR  5:49MR  3:40VT 

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.