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DARK SKY INDEX - New

June 2004 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  19:34MR 20:52SS         23: 8TE          3: 7TS  4:43MS  5:24SR          0: 0VT 
 6- 2          20:52SS 21: 1MR 23:10TE          3: 5TS          5:24SR  5:28MS  0: 0VT 
 6- 3          20:53SS 22:21MR 23:12TE          3: 4TS          5:22SR  6:25MS  0: 0VT 
 6- 4          20:53SS         23:13TE 23:28MR  3: 4TS          5:22SR  7:37MS  0:15VT 
 6- 5          20:55SS         23:15TE  0:19MR  3: 2TS          5:22SR  8:56MS  1: 4VT 
 6- 6          20:55SS         23:16TE  0:57MR  3: 1TS          5:22SR 10:18MS  1:40VT 
 6- 7          20:57SS         23:16TE  1:25MR  3: 1TS          5:22SR 11:36MS  2: 9VT 
 6- 8          20:57SS         23:17TE  1:47MR  3: 1TS          5:22SR          2:30VT 
 6- 9  12:49MS 20:58SS         23:19TE  2: 7MR  3: 0TS          5:20SR          2:47VT 
 6-10  14: 0MS 20:58SS         23:19TE  2:25MR  3: 0TS          5:20SR          3: 5VT 
 6-11  15: 7MS 20:58SS         23:21TE  2:42MR  2:58TS          5:20SR          3:20VT 
 6-12  16:13MS 21: 0SS         23:22TE          2:58TS  3: 0MR  5:20SR          3:36VT 
 6-13  17:19MS 21: 0SS         23:22TE          2:58TS  3:19MR  5:20SR          3:35VT 
 6-14  18:27MS 21: 0SS         23:22TE          2:58TS  3:45MR  5:20SR          3:35VT 
 6-15  19:32MS 21: 1SS         23:23TE          2:58TS  4:13MR  5:20SR          3:34VT 
 6-16  20:37MS 21: 1SS         23:23TE          2:58TS  4:50MR  5:20SR          3:34VT 
 6-17          21: 1SS 21:34MS 23:25TE          2:58TS          5:20SR  5:37MR  3:32VT 
 6-18          21: 1SS 22:25MS 23:25TE          2:58TS          5:20SR  6:31MR  3:32VT 
 6-19          21: 1SS 23: 7MS 23:25TE          2:58TS          5:20SR  7:33MR  3:32VT 
 6-20          21: 1SS         23:25TE 23:40MS  2:58TS          5:22SR  8:38MR  3:17VT 
 6-21          21: 2SS         23:25TE  0: 9MS  2:58TS          5:22SR  9:47MR  2:49VT 
 6-22          21: 2SS         23:25TE  0:31MS  2:58TS          5:22SR 10:55MR  2:27VT 
 6-23          21: 2SS         23:25TE  0:51MS  2:58TS          5:22SR          2: 7VT 
 6-24  12: 4MR 21: 2SS         23:25TE  1:10MS  3: 0TS          5:22SR          1:49VT 
 6-25  13:15MR 21: 2SS         23:25TE  1:28MS  3: 0TS          5:22SR          1:31VT 
 6-26  14:28MR 21: 2SS         23:25TE  1:47MS  3: 1TS          5:24SR          1:13VT 
 6-27  15:43MR 21: 2SS         23:25TE  2:10MS  3: 1TS          5:24SR          0:51VT 
 6-28  17: 4MR 21: 2SS         23:25TE  2:37MS  3: 2TS          5:25SR          0:25VT 
 6-29  18:30MR 21: 2SS         23:23TE          3: 2TS  3:15MS  5:25SR          0: 0VT 
 6-30  19:52MR 21: 2SS         23:23TE          3: 4TS  4: 4MS  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.