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

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