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

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