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

 9- 1          19:46SS 19:58MR 21:32TE          4:48TS          6:34SR  8:59MS  0: 0VT 
 9- 2          19:45SS 20:23MR 21:31TE          4:49TS          6:34SR 10: 3MS  0: 0VT 
 9- 3          19:43SS 20:51MR 21:28TE          4:50TS          6:35SR 11: 4MS  0: 0VT 
 9- 4          19:40SS 21:19MR 21:25TE          4:52TS          6:37SR          0: 0VT 
 9- 5  12: 6MS 19:38SS         21:23TE 21:52MR  4:54TS          6:37SR          0:28VT 
 9- 6  13: 4MS 19:37SS         21:22TE 22:31MR  4:55TS          6:40SR          1: 8VT 
 9- 7  13:58MS 19:36SS         21:19TE 23:13MR  4:56TS          6:40SR          1:53VT 
 9- 8  14:49MS 19:34SS         21:16TE  0: 3MR  4:58TS          6:41SR          2:46VT 
 9- 9  15:34MS 19:31SS         21:15TE  0:57MR  5: 0TS          6:43SR          3:42VT 
 9-10  16:15MS 19:30SS         21:13TE  1:57MR  5: 1TS          6:43SR          4:43VT 
 9-11  16:49MS 19:28SS         21:10TE  3: 1MR  5: 1TS          6:46SR          5:50VT 
 9-12  17:23MS 19:25SS         21: 8TE  4: 7MR  5: 4TS          6:46SR          6:59VT 
 9-13  17:53MS 19:23SS         21: 7TE          5: 4TS  5:18MR  6:48SR          7:57VT 
 9-14  18:22MS 19:22SS         21: 4TE          5: 7TS  6:28MR  6:49SR          8: 2VT 
 9-15  18:49MS 19:19SS         21: 1TE          5: 7TS          6:50SR  7:41MR  8: 6VT 
 9-16          19:17SS 19:19MS 21: 0TE          5:10TS          6:52SR  8:56MR  8:10VT 
 9-17          19:16SS 19:52MS 20:58TE          5:10TS          6:52SR 10:13MR  8:12VT 
 9-18          19:13SS 20:28MS 20:55TE          5:11TS          6:54SR 11:28MR  8:16VT 
 9-19          19:12SS         20:53TE 21:10MS  5:13TS          6:55SR          8: 3VT 
 9-20  12:37MR 19:10SS         20:52TE 22: 0MS  5:15TS          6:56SR          7:15VT 
 9-21  13:43MR 19: 8SS         20:49TE 22:58MS  5:16TS          6:58SR          6:18VT 
 9-22  14:38MR 19: 7SS         20:47TE  0: 1MS  5:18TS          6:58SR          5:16VT 
 9-23  15:25MR 19: 4SS         20:46TE  1: 8MS  5:19TS          7: 0SR          4:10VT 
 9-24  16: 4MR 19: 2SS         20:43TE  2:17MS  5:20TS          7: 1SR          3: 2VT 
 9-25  16:38MR 19: 1SS         20:42TE  3:27MS  5:22TS          7: 3SR          1:55VT 
 9-26  17: 7MR 18:58SS         20:40TE  4:34MS  5:22TS          7: 4SR          0:48VT 
 9-27  17:34MR 18:57SS         20:37TE          5:25TS  5:40MS  7: 4SR          0: 0VT 
 9-28  18: 1MR 18:55SS         20:36TE          5:25TS  6:46MS  7: 7SR          0: 0VT 
 9-29  18:25MR 18:52SS         20:34TE          5:26TS          7: 7SR  7:49MS  0: 0VT 
 9-30          18:51SS 18:52MR 20:31TE          5:28TS          7: 9SR  8:52MS  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