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          20:37SS 20:57MS 22:38TE          3:55TS          5:55SR  7:28MR  5:16VT 
 8- 2          20:36SS 21:19MS 22:37TE          3:55TS          5:56SR  8:44MR  5:18VT 
 8- 3          20:34SS 21:38MS 22:34TE          3:58TS          5:58SR  9:56MR  5:23VT 
 8- 4          20:32SS 21:57MS 22:32TE          4: 0TS          5:58SR 11: 6MR  5:27VT 
 8- 5          20:31SS 22:15MS 22:31TE          4: 1TS          6: 1SR          5:30VT 
 8- 6  12:15MR 20:31SS         22:28TE 22:34MS  4: 4TS          6: 1SR          5:29VT 
 8- 7  13:22MR 20:28SS         22:27TE 22:58MS  4: 5TS          6: 3SR          5: 7VT 
 8- 8  14:30MR 20:28SS         22:25TE 23:25MS  4: 7TS          6: 4SR          4:41VT 
 8- 9  15:34MR 20:25SS         22:22TE 23:58MS  4: 9TS          6: 4SR          4:10VT 
 8-10  16:33MR 20:25SS         22:19TE  0:40MS  4:10TS          6: 7SR          3:30VT 
 8-11  17:31MR 20:22SS         22:17TE  1:30MS  4:13TS          6: 7SR          2:43VT 
 8-12  18:17MR 20:22SS         22:16TE  2:28MS  4:13TS          6: 9SR          1:45VT 
 8-13  18:55MR 20:19SS         22:13TE  3:34MS  4:16TS          6:10SR          0:41VT 
 8-14  19:27MR 20:17SS         22:12TE          4:18TS  4:45MS  6:11SR          0: 0VT 
 8-15  19:52MR 20:16SS         22:10TE          4:19TS  5:55MS  6:13SR          0: 0VT 
 8-16  20:13MR 20:15SS         22: 7TE          4:20TS          6:13SR  7: 7MS  0: 0VT 
 8-17          20:13SS 20:32MR 22: 4TE          4:22TS          6:15SR  8:18MS  0: 0VT 
 8-18          20:12SS 20:52MR 22: 2TE          4:25TS          6:16SR  9:30MS  0: 0VT 
 8-19          20:10SS 21:10MR 22: 1TE          4:25TS          6:18SR 10:45MS  0: 0VT 
 8-20          20: 7SS 21:31MR 21:58TE          4:28TS          6:19SR          0: 0VT 
 8-21  12: 1MS 20: 7SS         21:57TE 21:57MR  4:30TS          6:19SR          0: 0VT 
 8-22  13:21MS 20: 4SS         21:55TE 22:28MR  4:31TS          6:20SR          0:32VT 
 8-23  14:40MS 20: 2SS         21:52TE 23: 7MR  4:33TS          6:22SR          1:15VT 
 8-24  15:53MS 20: 1SS         21:49TE  0: 1MR  4:34TS          6:24SR          2:11VT 
 8-25  16:51MS 20: 0SS         21:47TE  1: 7MR  4:35TS          6:25SR          3:20VT 
 8-26  17:49MS 19:58SS         21:46TE  2:24MR  4:37TS          6:25SR          4:37VT 
 8-27  18:27MS 19:55SS         21:43TE  3:43MR  4:40TS          6:26SR          6: 0VT 
 8-28  18:57MS 19:53SS         21:42TE          4:40TS  5: 4MR  6:28SR          6:58VT 
 8-29  19:21MS 19:52SS         21:38TE          4:43TS  6:20MR  6:30SR          7: 4VT 
 8-30  19:42MS 19:51SS         21:37TE          4:43TS          6:31SR  7:34MR  7: 6VT 
 8-31          19:49SS 20: 1MS 21:34TE          4:46TS          6:31SR  8:45MR  7:11VT 

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