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  13:37MR 20:37SS         22:40TE 23:31MS  3:54TS          5:55SR          4:22VT 
 8- 2  14:48MR 20:37SS         22:37TE 23:55MS  3:55TS          5:56SR          3:59VT 
 8- 3  16: 0MR 20:34SS         22:36TE  0:27MS  3:57TS          5:58SR          3:30VT 
 8- 4  17:10MR 20:34SS         22:34TE  1: 8MS  3:58TS          5:58SR          2:49VT 
 8- 5  18:17MR 20:32SS         22:31TE  2: 5MS  4: 1TS          6: 0SR          1:55VT 
 8- 6  19:15MR 20:31SS         22:30TE  3:16MS  4: 3TS          6: 1SR          0:46VT 
 8- 7  20: 0MR 20:30SS         22:28TE          4: 4TS  4:37MS  6: 1SR          0: 0VT 
 8- 8          20:28SS 20:34MR 22:25TE          4: 5TS          6: 4SR  6: 4MS  0: 0VT 
 8- 9          20:27SS 21: 1MR 22:23TE          4: 7TS          6: 4SR  7:31MS  0: 0VT 
 8-10          20:25SS 21:23MR 22:21TE          4:10TS          6: 5SR  8:55MS  0: 0VT 
 8-11          20:23SS 21:43MR 22:19TE          4:11TS          6: 7SR 10:16MS  0: 0VT 
 8-12          20:22SS 22: 4MR 22:16TE          4:13TS          6: 7SR 11:37MS  0: 0VT 
 8-13          20:21SS         22:15TE 22:23MR  4:15TS          6:10SR          0: 8VT 
 8-14  12:58MS 20:19SS         22:13TE 22:47MR  4:16TS          6:10SR          0:34VT 
 8-15  14:18MS 20:17SS         22:10TE 23:16MR  4:19TS          6:11SR          1: 6VT 
 8-16  15:34MS 20:16SS         22: 8TE 23:52MR  4:19TS          6:13SR          1:43VT 
 8-17  16:39MS 20:13SS         22: 7TE  0:39MR  4:22TS          6:15SR          2:31VT 
 8-18  17:45MS 20:13SS         22: 4TE  1:34MR  4:24TS          6:16SR          3:30VT 
 8-19  18:32MS 20:10SS         22: 1TE  2:40MR  4:25TS          6:16SR          4:38VT 
 8-20  19: 8MS 20: 8SS         22: 0TE  3:47MR  4:26TS          6:18SR          5:48VT 
 8-21  19:37MS 20: 7SS         21:58TE          4:28TS  4:56MR  6:19SR          6:30VT 
 8-22  19:58MS 20: 6SS         21:55TE          4:31TS  6: 4MR  6:20SR          6:35VT 
 8-23          20: 4SS 20:17MS 21:53TE          4:31TS          6:22SR  7:10MR  6:37VT 
 8-24          20: 1SS 20:34MS 21:51TE          4:34TS          6:22SR  8:15MR  6:43VT 
 8-25          20: 1SS 20:47MS 21:49TE          4:35TS          6:24SR  9:18MR  6:46VT 
 8-26          19:58SS 21: 2MS 21:46TE          4:37TS          6:25SR 10:22MR  6:50VT 
 8-27          19:57SS 21:19MS 21:45TE          4:39TS          6:26SR 11:26MR  6:54VT 
 8-28          19:55SS 21:36MS 21:43TE          4:40TS          6:28SR          6:56VT 
 8-29  12:34MR 19:52SS         21:40TE 21:58MS  4:41TS          6:28SR          6:43VT 
 8-30  13:43MR 19:52SS         21:37TE 22:25MS  4:43TS          6:30SR          6:18VT 
 8-31  14:55MR 19:49SS         21:36TE 23: 1MS  4:45TS          6:31SR          5:43VT 

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