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

© 1998-2003 David Haworth