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 20:19MS 21:32TE          4:46TS          6:33SR  9:56MR  7:14VT 
 9- 2          19:45SS 20:38MS 21:31TE          4:49TS          6:34SR 11: 4MR  7:17VT 
 9- 3          19:43SS 21: 0MS 21:28TE          4:50TS          6:35SR          7:22VT 
 9- 4  12:13MR 19:40SS 21:25MS 21:25TE          4:52TS          6:37SR          7:26VT 
 9- 5  13:21MR 19:38SS         21:23TE 21:55MS  4:54TS          6:37SR          6:58VT 
 9- 6  14:25MR 19:37SS         21:22TE 22:34MS  4:55TS          6:40SR          6:20VT 
 9- 7  15:22MR 19:36SS         21:19TE 23:21MS  4:55TS          6:40SR          5:34VT 
 9- 8  16:12MR 19:34SS         21:17TE  0:16MS  4:58TS          6:41SR          4:41VT 
 9- 9  16:49MR 19:31SS         21:15TE  1:19MS  4:58TS          6:43SR          3:39VT 
 9-10  17:27MR 19:30SS         21:13TE  2:27MS  5: 1TS          6:43SR          2:34VT 
 9-11  17:53MR 19:28SS         21:10TE  3:37MS  5: 1TS          6:46SR          1:23VT 
 9-12  18:16MR 19:25SS         21: 8TE  4:49MS  5: 4TS          6:46SR          0:15VT 
 9-13  18:37MR 19:23SS         21: 7TE          5: 4TS  6: 1MS  6:48SR          0: 0VT 
 9-14  18:57MR 19:22SS         21: 4TE          5: 7TS          6:49SR  7:15MS  0: 0VT 
 9-15  19:16MR 19:19SS         21: 1TE          5: 7TS          6:49SR  8:30MS  0: 0VT 
 9-16          19:17SS 19:37MR 21: 0TE          5: 9TS          6:52SR  9:47MS  0: 0VT 
 9-17          19:16SS 20: 1MR 20:58TE          5:10TS          6:52SR 11: 7MS  0: 0VT 
 9-18          19:13SS 20:30MR 20:55TE          5:11TS          6:54SR          0: 0VT 
 9-19  12:28MS 19:12SS         20:53TE 21: 7MR  5:13TS          6:55SR          0:13VT 
 9-20  13:43MS 19:10SS         20:52TE 21:58MR  5:15TS          6:56SR          1: 5VT 
 9-21  14:52MS 19: 8SS         20:49TE 23: 0MR  5:16TS          6:58SR          2:10VT 
 9-22  15:46MS 19: 7SS         20:47TE  0:12MR  5:18TS          6:58SR          3:24VT 
 9-23  16:28MS 19: 4SS         20:46TE  1:30MR  5:19TS          7: 0SR          4:43VT 
 9-24  16:56MS 19: 2SS         20:43TE  2:47MR  5:19TS          7: 1SR          6: 4VT 
 9-25  17:25MS 19: 1SS         20:42TE  4: 4MR  5:22TS          7: 3SR          7:21VT 
 9-26  17:46MS 18:58SS         20:40TE  5:16MR  5:22TS          7: 4SR          8:36VT 
 9-27  18: 4MS 18:57SS         20:37TE          5:25TS  6:28MR  7: 4SR          8:47VT 
 9-28  18:23MS 18:55SS         20:36TE          5:25TS          7: 7SR  7:37MR  8:49VT 
 9-29  18:43MS 18:52SS         20:34TE          5:26TS          7: 7SR  8:48MR  8:52VT 
 9-30          18:51SS 19: 2MS 20:31TE          5:28TS          7: 9SR  9:56MR  8:57VT 

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