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: 4MR 22:40TE          3:52TS          5:55SR 10:19MS  0: 0VT 
 8- 2          20:37SS 22:22MR 22:37TE          3:55TS          5:55SR 11:37MS  0: 0VT 
 8- 3          20:36SS         22:36TE 22:43MR  3:57TS          5:56SR          0: 7VT 
 8- 4  12:56MS 20:34SS         22:34TE 23: 6MR  3:58TS          5:58SR          0:31VT 
 8- 5  14:18MS 20:32SS         22:31TE 23:34MR  4: 1TS          6: 0SR          1: 2VT 
 8- 6  17: 0MS 20:31SS         22:30TE  0:10MR  4: 1TS          6: 1SR          1:40VT 
 8- 7  17:31MS 20:30SS         22:28TE  0:57MR  4: 4TS          6: 1SR          2:29VT 
 8- 8  18: 1MS 20:28SS         22:25TE  1:58MR  4: 5TS          6: 3SR          3:32VT 
 8- 9  18:55MS 20:27SS         22:23TE  3: 7MR  4: 7TS          6: 4SR          4:44VT 
 8-10  19:36MS 20:25SS         22:22TE          4: 9TS  4:24MR  6: 5SR          5:46VT 
 8-11  20: 7MS 20:23SS         22:19TE          4:10TS  5:39MR  6: 7SR          5:51VT 
 8-12          20:22SS 20:30MS 22:17TE          4:13TS          6: 7SR  6:50MR  5:55VT 
 8-13          20:21SS 20:49MS 22:16TE          4:15TS          6: 9SR  8: 0MR  5:58VT 
 8-14          20:19SS 21: 7MS 22:13TE          4:16TS          6:10SR  9: 7MR  6: 3VT 
 8-15          20:17SS 21:22MS 22:10TE          4:18TS          6:11SR 10:13MR  6: 7VT 
 8-16          20:16SS 21:37MS 22: 8TE          4:19TS          6:13SR 11:18MR  6:11VT 
 8-17          20:15SS 21:55MS 22: 7TE          4:22TS          6:13SR          6:14VT 
 8-18  12:23MR 20:13SS         22: 4TE 22:13MS  4:22TS          6:15SR          6: 9VT 
 8-19  13:30MR 20:10SS         22: 2TE 22:37MS  4:25TS          6:16SR          5:47VT 
 8-20  14:37MR 20:10SS         22: 1TE 23: 7MS  4:26TS          6:18SR          5:19VT 
 8-21  15:43MR 20: 7SS         21:58TE 23:43MS  4:28TS          6:19SR          4:45VT 
 8-22  16:40MR 20: 6SS         21:55TE  0:33MS  4:30TS          6:19SR          3:57VT 
 8-23  17:37MR 20: 4SS         21:53TE  1:32MS  4:31TS          6:22SR          2:58VT 
 8-24  18:21MR 20: 2SS         21:52TE  2:43MS  4:34TS          6:22SR          1:50VT 
 8-25  18:55MR 20: 1SS         21:49TE  4: 0MS  4:34TS          6:24SR          0:34VT 
 8-26  19:23MR 19:58SS         21:47TE          4:37TS  5:19MS  6:25SR          0: 0VT 
 8-27  19:47MR 19:57SS         21:45TE          4:37TS          6:25SR  6:40MS  0: 0VT 
 8-28          19:55SS 20: 7MR 21:43TE          4:40TS          6:28SR  8: 0MS  0: 0VT 
 8-29          19:53SS 20:28MR 21:40TE          4:41TS          6:28SR  9:19MS  0: 0VT 
 8-30          19:52SS 20:47MR 21:38TE          4:43TS          6:30SR 10:41MS  0: 0VT 
 8-31          19:49SS 21:10MR 21:37TE          4:45TS          6:31SR          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.

© 1998-2003 David Haworth