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

 4- 1          19:38SS         21:22TE 23:34MR  5: 4TS          6:48SR  8:25MS  2:11VT 
 4- 2          19:40SS         21:23TE  0:40MR  5: 3TS          6:46SR  9:11MS  3:17VT 
 4- 3          19:40SS         21:25TE  1:37MR  5: 0TS          6:45SR 10: 6MS  4:12VT 
 4- 4          19:42SS         21:27TE  2:25MR  4:58TS          6:43SR 11: 4MS  4:58VT 
 4- 5          19:43SS         21:28TE  3: 4MR  4:55TS          6:40SR          5:36VT 
 4- 6  12: 7MS 19:45SS         21:30TE  3:35MR  4:54TS          6:39SR          6: 5VT 
 4- 7  13:11MS 19:46SS         21:31TE  4: 1MR  4:52TS          6:37SR          6:30VT 
 4- 8  14:15MS 19:47SS         21:32TE  4:24MR  4:49TS          6:34SR          6:51VT 
 4- 9  15:18MS 19:49SS         21:34TE  4:43MR  4:48TS          6:34SR          7: 9VT 
 4-10  16:21MS 19:49SS         21:37TE          4:45TS  5: 3MR  6:31SR          7: 7VT 
 4-11  17:23MS 19:51SS         21:37TE          4:43TS  5:22MR  6:30SR          7: 5VT 
 4-12  18:28MS 19:52SS         21:40TE          4:40TS  5:43MR  6:28SR          7: 0VT 
 4-13  19:34MS 19:53SS         21:42TE          4:39TS  6: 5MR  6:25SR          6:56VT 
 4-14          19:55SS 20:43MS 21:43TE          4:37TS          6:25SR  6:33MR  6:53VT 
 4-15          19:57SS         21:45TE 21:52MS  4:34TS          6:22SR  7: 5MR  6:42VT 
 4-16          19:58SS         21:46TE 23: 1MS  4:31TS          6:20SR  7:48MR  5:30VT 
 4-17          19:58SS         21:47TE  0: 7MS  4:30TS          6:19SR  8:41MR  4:22VT 
 4-18          20: 1SS         21:49TE  1: 4MS  4:28TS          6:18SR  9:42MR  3:24VT 
 4-19          20: 1SS         21:52TE  1:52MS  4:25TS          6:16SR 10:53MR  2:33VT 
 4-20          20: 2SS         21:53TE  2:31MS  4:24TS          6:13SR          1:52VT 
 4-21  12:10MR 20: 4SS         21:55TE  3: 4MS  4:22TS          6:13SR          1:17VT 
 4-22  13:26MR 20: 6SS         21:57TE  3:31MS  4:19TS          6:10SR          0:48VT 
 4-23  14:45MR 20: 7SS         21:58TE  3:55MS  4:16TS          6: 9SR          0:20VT 
 4-24  16: 1MR 20: 7SS         22: 1TE          4:15TS  4:19MS  6: 7SR          0: 0VT 
 4-25  17:19MR 20:10SS         22: 2TE          4:13TS  4:43MS  6: 5SR          0: 0VT 
 4-26  18:37MR 20:10SS         22: 4TE          4:10TS  5:10MS  6: 4SR          0: 0VT 
 4-27  19:53MR 20:12SS         22: 6TE          4: 9TS  5:40MS  6: 3SR          0: 0VT 
 4-28          20:13SS 21:10MR 22: 7TE          4: 7TS          6: 1SR  6:18MS  0: 0VT 
 4-29          20:15SS         22:10TE 22:21MR  4: 4TS          6: 0SR  7: 1MS  0:10VT 
 4-30          20:16SS         22:12TE 23:23MR  4: 3TS          5:58SR  7:52MS  1:11VT 

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.

© 1998-2008 David Haworth