The dark sky table shows the Pacific Standard Time (PST) times and 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          18:37SS 19:34MR 20:22TE          4: 4TS          5:49SR  7: 0MS  0: 0VT 
 4- 2          18:38SS         20:22TE 20:34MR  4: 3TS          5:46SR  7:28MS  0:11VT 
 4- 3          18:40SS         20:25TE 21:34MR  4: 1TS          5:45SR  7:58MS  1: 8VT 
Pacific Daylight Saving Time (PDT) starts April 4, 2:00 am, The below times are PDT 
 4- 4          19:42SS         21:27TE 23:31MR  4:58TS          6:43SR  9:30MS  2: 4VT 
 4- 5          19:43SS         21:28TE  0:28MR  4:56TS          6:41SR 10: 8MS  3: 0VT 
 4- 6          19:45SS         21:30TE  1:22MR  4:55TS          6:40SR 10:51MS  3:52VT 
 4- 7          19:46SS         21:31TE  2:13MR  4:52TS          6:37SR 11:40MS  4:42VT 
 4- 8          19:46SS         21:32TE  3: 1MR  4:49TS          6:35SR          5:28VT 
 4- 9  12:34MS 19:47SS         21:34TE  3:43MR  4:48TS          6:34SR          6: 9VT 
 4-10  13:36MS 19:49SS         21:36TE  4:22MR  4:46TS          6:31SR          6:46VT 
 4-11  14:40MS 19:51SS         21:37TE          4:43TS  4:58MR  6:31SR          7: 6VT 
 4-12  15:49MS 19:52SS         21:38TE          4:41TS  5:31MR  6:28SR          7: 3VT 
 4-13  17: 2MS 19:53SS         21:40TE          4:40TS  6: 3MR  6:26SR          6:59VT 
 4-14  18:16MS 19:55SS         21:43TE          4:37TS          6:25SR  6:34MR  6:53VT 
 4-15  19:34MS 19:55SS         21:43TE          4:34TS          6:22SR  7: 9MR  6:51VT 
 4-16          19:57SS 20:52MS 21:46TE          4:33TS          6:22SR  7:45MR  6:46VT 
 4-17          19:58SS         21:47TE 22: 8MS  4:31TS          6:19SR  8:26MR  6:22VT 
 4-18          20: 0SS         21:49TE 23:22MS  4:28TS          6:18SR  9:14MR  5: 6VT 
 4-19          20: 1SS         21:51TE  0:32MS  4:26TS          6:16SR 10: 7MR  3:54VT 
 4-20          20: 2SS         21:52TE  1:32MS  4:25TS          6:15SR 11: 6MR  2:52VT 
 4-21          20: 4SS         21:55TE  2:25MS  4:22TS          6:13SR          1:56VT 
 4-22  12: 7MR 20: 4SS         21:57TE  3: 9MS  4:19TS          6:10SR          1:10VT 
 4-23  13:13MR 20: 6SS         21:58TE  3:46MS  4:18TS          6:10SR          0:31VT 
 4-24  14:16MR 20: 7SS         22: 0TE          4:16TS  4:18MS  6: 7SR          0: 0VT 
 4-25  15:21MR 20: 8SS         22: 1TE          4:13TS  4:46MS  6: 7SR          0: 0VT 
 4-26  16:23MR 20:10SS         22: 4TE          4:11TS  5:13MS  6: 4SR          0: 0VT 
 4-27  17:25MR 20:12SS         22: 4TE          4:10TS  5:37MS  6: 3SR          0: 0VT 
 4-28  18:25MR 20:13SS         22: 7TE          4: 7TS          6: 1SR  6: 4MS  0: 0VT 
 4-29  19:27MR 20:13SS         22: 8TE          4: 4TS          6: 0SR  6:30MS  0: 0VT 
 4-30          20:15SS 20:25MR 22:10TE          4: 3TS          5:58SR  6:58MS  0: 0VT 

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