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  18:13MS 19:37SS         21:22TE          5: 4TS  6: 4MR  6:49SR          7:42VT 
 4- 2  19:16MS 19:40SS         21:23TE          5: 3TS  6:25MR  6:46SR          7:39VT 
 4- 3          19:40SS 20:17MS 21:25TE          5: 1TS          6:45SR  6:49MR  7:35VT 
 4- 4          19:42SS 21:19MS 21:27TE          4:58TS          6:43SR  7:16MR  7:31VT 
 4- 5          19:43SS         21:28TE 22:22MS  4:56TS          6:40SR  7:49MR  6:34VT 
 4- 6          19:45SS         21:30TE 23:23MS  4:55TS          6:40SR  8:26MR  5:31VT 
 4- 7          19:46SS         21:31TE  0:22MS  4:52TS          6:37SR  9:14MR  4:29VT 
 4- 8          19:46SS         21:32TE  1:16MS  4:49TS          6:35SR 10: 7MR  3:33VT 
 4- 9          19:49SS         21:34TE  2: 4MS  4:48TS          6:34SR 11:10MR  2:43VT 
 4-10          19:49SS         21:36TE  2:43MS  4:46TS          6:31SR          2: 2VT 
 4-11  12:19MR 19:51SS         21:37TE  3:19MS  4:43TS          6:30SR          1:24VT 
 4-12  13:33MR 19:52SS         21:40TE  3:49MS  4:41TS          6:28SR          0:52VT 
 4-13  14:48MR 19:53SS         21:40TE  4:18MS  4:39TS          6:26SR          0:20VT 
 4-14  16: 6MR 19:55SS         21:43TE          4:37TS  4:45MS  6:25SR          0: 0VT 
 4-15  17:25MR 19:55SS         21:45TE          4:34TS  5:11MS  6:22SR          0: 0VT 
 4-16  18:46MR 19:58SS         21:46TE          4:33TS  5:41MS  6:22SR          0: 0VT 
 4-17          19:58SS 20: 7MR 21:47TE          4:31TS  6:16MS  6:19SR          0: 0VT 
 4-18          20: 0SS 21:28MR 21:49TE          4:28TS          6:18SR  6:56MS  0: 0VT 
 4-19          20: 1SS         21:52TE 22:43MR  4:25TS          6:16SR  7:45MS  0:51VT 
 4-20          20: 2SS         21:52TE 23:51MR  4:24TS          6:15SR  8:41MS  1:58VT 
 4-21          20: 4SS         21:55TE  0:48MR  4:22TS          6:13SR  9:42MS  2:52VT 
 4-22          20: 4SS         21:57TE  1:34MR  4:19TS          6:10SR 10:49MS  3:36VT 
 4-23          20: 7SS         21:58TE  2:10MR  4:18TS          6:10SR 11:55MS  4:11VT 
 4-24          20: 7SS         22: 0TE  2:40MR  4:16TS          6: 7SR          4:40VT 
 4-25  13: 0MS 20: 8SS         22: 1TE  3: 4MR  4:13TS          6: 5SR          5: 3VT 
 4-26  14: 3MS 20:10SS         22: 4TE  3:28MR  4:11TS          6: 4SR          5:23VT 
 4-27  15: 4MS 20:12SS         22: 6TE  3:49MR  4: 9TS          6: 3SR          5:43VT 
 4-28  16: 7MS 20:13SS         22: 7TE          4: 7TS  4: 9MR  6: 1SR          5:59VT 
 4-29  17: 7MS 20:13SS         22: 8TE          4: 4TS  4:30MR  6: 0SR          5:56VT 
 4-30  18:10MS 20:16SS         22:10TE          4: 3TS  4:54MR  5:58SR          5:52VT 

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