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         22:40TE 23: 7MR  3:52TS          5:55SR 11:33MS  0:27VT 
 8- 2          20:37SS         22:37TE 23:37MR  3:55TS          5:55SR          0:59VT 
 8- 3  12:43MS 20:36SS         22:36TE  0: 7MR  3:57TS          5:56SR          1:31VT 
 8- 4  13:55MS 20:34SS         22:34TE  0:42MR  3:58TS          5:58SR          2: 7VT 
 8- 5  15: 7MS 20:32SS         22:31TE  1:19MR  4: 0TS          6: 0SR          2:48VT 
 8- 6  16:19MS 20:31SS         22:30TE  2: 5MR  4: 1TS          6: 1SR          3:35VT 
 8- 7  17:28MS 20:30SS         22:28TE  2:58MR  4: 4TS          6: 1SR          4:30VT 
 8- 8  18:28MS 20:28SS         22:25TE  4: 0MR  4: 5TS          6: 3SR          5:34VT 
 8- 9  19:23MS 20:27SS         22:23TE          4: 7TS  5: 7MR  6: 4SR          5:44VT 
 8-10  20: 8MS 20:25SS         22:22TE          4: 9TS          6: 5SR  6:16MR  5:46VT 
 8-11          20:23SS 20:47MS 22:19TE          4:10TS          6: 7SR  7:25MR  5:51VT 
 8-12          20:22SS 21:21MS 22:17TE          4:13TS          6: 7SR  8:34MR  5:55VT 
 8-13          20:21SS 21:51MS 22:16TE          4:15TS          6: 9SR  9:41MR  5:58VT 
 8-14          20:19SS         22:13TE 22:17MS  4:16TS          6:10SR 10:46MR  5:58VT 
 8-15          20:17SS         22:10TE 22:43MS  4:18TS          6:11SR 11:48MR  5:34VT 
 8-16          20:16SS         22: 8TE 23:10MS  4:19TS          6:13SR          5: 9VT 
 8-17  12:49MR 20:15SS         22: 7TE 23:37MS  4:22TS          6:13SR          4:44VT 
 8-18  13:49MR 20:13SS         22: 4TE  0: 7MS  4:22TS          6:15SR          4:15VT 
 8-19  14:48MR 20:10SS         22: 2TE  0:40MS  4:25TS          6:16SR          3:44VT 
 8-20  15:45MR 20:10SS         22: 1TE  1:19MS  4:26TS          6:18SR          3: 7VT 
 8-21  16:37MR 20: 7SS         21:58TE  2: 2MS  4:28TS          6:19SR          2:25VT 
 8-22  17:31MR 20: 6SS         21:55TE  2:52MS  4:30TS          6:19SR          1:37VT 
 8-23  18:16MR 20: 4SS         21:53TE  3:49MS  4:31TS          6:20SR          0:42VT 
 8-24  18:58MR 20: 2SS         21:52TE          4:33TS  4:49MS  6:22SR          0: 0VT 
 8-25  19:37MR 20: 1SS         21:49TE          4:34TS  5:55MS  6:24SR          0: 0VT 
 8-26          19:58SS 20:10MR 21:47TE          4:37TS          6:25SR  7: 3MS  0: 0VT 
 8-27          19:58SS 20:40MR 21:45TE          4:37TS          6:25SR  8:11MS  0: 0VT 
 8-28          19:55SS 21:10MR 21:43TE          4:40TS          6:28SR  9:22MS  0: 0VT 
 8-29          19:53SS 21:40MR 21:40TE          4:40TS          6:28SR 10:34MS  0: 0VT 
 8-30          19:52SS         21:38TE 22:10MR  4:43TS          6:30SR 11:46MS  0:31VT 
 8-31          19:49SS         21:37TE 22:43MR  4:45TS          6:31SR          1: 6VT 

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.

© 1998-2003 David Haworth