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  3: 7MS  5: 4TS          6:48SR 11:45MR  1:57VT 
 4- 2          19:40SS         21:23TE  3:47MS  5: 1TS          6:46SR          1:13VT 
 4- 3  13: 3MR 19:40SS         21:25TE  4:20MS  5: 0TS          6:43SR          0:39VT 
 4- 4  14:21MR 19:43SS         21:27TE  4:46MS  4:58TS          6:41SR          0:11VT 
 4- 5  15:37MR 19:43SS         21:28TE          4:55TS  5: 9MS  6:40SR          0: 0VT 
 4- 6  16:52MR 19:45SS         21:31TE          4:54TS  5:30MS  6:39SR          0: 0VT 
 4- 7  18: 7MR 19:46SS         21:31TE          4:50TS  5:49MS  6:37SR          0: 0VT 
 4- 8  19:19MR 19:47SS         21:34TE          4:49TS  6:10MS  6:34SR          0: 0VT 
 4- 9          19:49SS 20:32MR 21:36TE          4:46TS          6:33SR  6:34MS  0: 0VT 
 4-10          19:51SS         21:37TE 21:43MR  4:45TS          6:31SR  7: 3MS  0: 6VT 
 4-11          19:52SS         21:38TE 22:53MR  4:43TS          6:30SR  7:35MS  1:15VT 
 4-12          19:52SS         21:40TE 23:58MR  4:40TS          6:28SR  8:17MS  2:17VT 
 4-13          19:53SS         21:42TE  0:55MR  4:37TS          6:25SR  9: 6MS  3:13VT 
 4-14          19:55SS         21:43TE  1:43MR  4:35TS          6:24SR 10: 1MS  4: 0VT 
 4-15          19:57SS         21:45TE  2:24MR  4:34TS          6:22SR 11: 3MS  4:39VT 
 4-16          19:58SS         21:46TE  2:57MR  4:31TS          6:20SR          5:10VT 
 4-17  12: 7MS 20: 0SS         21:49TE  3:24MR  4:30TS          6:19SR          5:34VT 
 4-18  13:13MS 20: 1SS         21:51TE  3:46MR  4:28TS          6:16SR          5:54VT 
 4-19  14:19MS 20: 1SS         21:52TE  4: 5MR  4:25TS          6:16SR          6:13VT 
 4-20  15:25MS 20: 2SS         21:53TE          4:22TS  4:25MR  6:13SR          6:29VT 
 4-21  16:36MS 20: 4SS         21:55TE          4:20TS  4:45MR  6:11SR          6:25VT 
 4-22  17:46MS 20: 6SS         21:58TE          4:19TS  5: 4MR  6:10SR          6:20VT 
 4-23  19: 0MS 20: 7SS         21:58TE          4:16TS  5:28MR  6: 9SR          6:18VT 
 4-24          20: 8SS 20:16MS 22: 1TE          4:15TS  5:58MR  6: 7SR          6:13VT 
 4-25          20:10SS 21:37MS 22: 2TE          4:13TS          6: 5SR  6:34MR  6:10VT 
 4-26          20:10SS         22: 4TE 22:53MS  4:10TS          6: 4SR  7:22MR  5:16VT 
 4-27          20:12SS         22: 7TE  0: 4MS  4: 7TS          6: 1SR  8:22MR  4: 3VT 
 4-28          20:13SS         22: 7TE  1: 2MS  4: 5TS          6: 1SR  9:34MR  3: 2VT 
 4-29          20:15SS         22:10TE  1:47MS  4: 4TS          5:58SR 10:52MR  2:16VT 
 4-30          20:16SS         22:12TE  2:22MS  4: 1TS          5:58SR          1:38VT 

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