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

 8- 1  20: 7MR 20:37SS         22:38TE          3:55TS          5:55SR  6:45MS  0: 0VT 
 8- 2          20:36SS 20:37MR 22:37TE          3:57TS          5:56SR  7:55MS  0: 0VT 
 8- 3          20:34SS 21: 6MR 22:34TE          3:58TS          5:58SR  9: 3MS  0: 0VT 
 8- 4          20:32SS 21:31MR 22:32TE          4: 0TS          6: 0SR 10:10MS  0: 0VT 
 8- 5          20:31SS 21:55MR 22:31TE          4: 1TS          6: 1SR 11:15MS  0: 0VT 
 8- 6          20:31SS 22:22MR 22:28TE          4: 4TS          6: 1SR          0: 0VT 
 8- 7  12:18MS 20:28SS         22:27TE 22:49MR  4: 5TS          6: 3SR          0:22VT 
 8- 8  13:19MS 20:28SS         22:23TE 23:19MR  4: 7TS          6: 4SR          0:55VT 
 8- 9  14:19MS 20:25SS         22:22TE 23:53MR  4: 9TS          6: 5SR          1:31VT 
 8-10  15:15MS 20:25SS         22:19TE  0:34MR  4:10TS          6: 7SR          2:14VT 
 8-11  16: 8MS 20:22SS         22:17TE  1:19MR  4:13TS          6: 7SR          3: 2VT 
 8-12  16:55MS 20:21SS         22:16TE  2:12MR  4:15TS          6: 9SR          3:55VT 
 8-13  17:42MS 20:19SS         22:13TE  3:10MR  4:16TS          6:10SR          4:56VT 
 8-14  18:21MS 20:17SS         22:12TE  4:13MR  4:18TS          6:11SR          6: 0VT 
 8-15  18:55MS 20:16SS         22:10TE          4:19TS  5:19MR  6:13SR          6: 9VT 
 8-16  19:25MS 20:15SS         22: 7TE          4:20TS          6:13SR  6:26MR  6:13VT 
 8-17  19:55MS 20:13SS         22: 4TE          4:22TS          6:15SR  7:37MR  6:18VT 
 8-18          20:12SS 20:22MS 22: 2TE          4:25TS          6:16SR  8:48MR  6:22VT 
 8-19          20:10SS 20:49MS 22: 1TE          4:26TS          6:18SR 10: 0MR  6:25VT 
 8-20          20: 7SS 21:19MS 21:58TE          4:28TS          6:19SR 11:13MR  6:29VT 
 8-21          20: 7SS 21:51MS 21:57TE          4:30TS          6:19SR          6:32VT 
 8-22  12:26MR 20: 4SS         21:55TE 22:28MS  4:31TS          6:20SR          6: 3VT 
 8-23  13:38MR 20: 2SS         21:52TE 23:12MS  4:33TS          6:22SR          5:20VT 
 8-24  14:46MR 20: 1SS         21:49TE  0: 3MS  4:34TS          6:24SR          4:31VT 
 8-25  15:49MR 20: 0SS         21:47TE  1: 1MS  4:35TS          6:25SR          3:34VT 
 8-26  16:38MR 19:58SS         21:46TE  2: 7MS  4:37TS          6:25SR          2:30VT 
 8-27  17:28MR 19:55SS         21:43TE  3:16MS  4:40TS          6:26SR          1:23VT 
 8-28  18: 4MR 19:53SS         21:40TE  4:28MS  4:40TS          6:28SR          0:12VT 
 8-29  18:37MR 19:52SS         21:38TE          4:43TS  5:37MS  6:30SR          0: 0VT 
 8-30  19: 7MR 19:51SS         21:37TE          4:43TS          6:31SR  6:46MS  0: 0VT 
 8-31  19:32MR 19:49SS         21:34TE          4:46TS          6:31SR  7:54MS  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.

© 1998-2008 David Haworth