The dark sky table shows the Pacific Standard Time (PST) 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

 3- 1          17:57SS         19:37TE 21:16MR  5: 7TS          6:46SR  8:52MS  1:39VT 
 3- 2          17:58SS         19:38TE 22:34MR  5: 4TS          6:45SR  9:18MS  2:55VT 
 3- 3          18: 0SS         19:40TE 23:51MR  5: 3TS          6:43SR  9:48MS  4:10VT 
 3- 4          18: 1SS         19:42TE  1: 4MR  5: 1TS          6:40SR 10:23MS  5:22VT 
 3- 5          18: 2SS         19:43TE  2:13MR  4:58TS          6:40SR 11: 4MS  6:30VT 
 3- 6          18: 4SS         19:43TE  3:16MR  4:58TS          6:37SR 11:52MS  7:32VT 
 3- 7          18: 4SS         19:46TE  4: 9MR  4:55TS          6:35SR          8:22VT 
 3- 8  12:46MS 18: 7SS         19:46TE          4:54TS  4:54MR  6:34SR          9: 7VT 
 3- 9  13:46MS 18: 7SS         19:49TE          4:52TS  5:31MR  6:31SR          9: 2VT 
 3-10  14:49MS 18: 8SS         19:49TE          4:49TS  6: 1MR  6:30SR          9: 0VT 
 3-11  15:52MS 18:10SS         19:51TE          4:48TS  6:25MR  6:28SR          8:56VT 
 3-12  16:55MS 18:12SS         19:52TE          4:46TS          6:26SR  6:49MR  8:53VT 
 3-13  17:58MS 18:13SS         19:53TE          4:43TS          6:25SR  7: 9MR  8:50VT 
 3-14          18:15SS 18:58MS 19:55TE          4:41TS          6:22SR  7:28MR  8:46VT 
 3-15          18:16SS         19:57TE 20: 1MS  4:40TS          6:20SR  7:48MR  8:38VT 
 3-16          18:17SS         19:58TE 21: 4MS  4:37TS          6:19SR  8: 8MR  7:33VT 
 3-17          18:19SS         20: 0TE 22: 7MS  4:35TS          6:16SR  8:32MR  6:28VT 
 3-18          18:19SS         20: 1TE 23:13MS  4:34TS          6:15SR  8:59MR  5:20VT 
 3-19          18:22SS         20: 2TE  0:19MS  4:31TS          6:13SR  9:32MR  4:12VT 
 3-20          18:22SS         20: 4TE  1:23MS  4:30TS          6:10SR 10:13MR  3: 5VT 
 3-21          18:23SS         20: 6TE  2:25MS  4:28TS          6: 9SR 11: 6MR  2: 2VT 
 3-22          18:25SS         20: 7TE  3:22MS  4:25TS          6: 7SR          1: 2VT 
 3-23  12: 8MR 18:27SS         20: 8TE  4:11MS  4:24TS          6: 5SR          0:12VT 
 3-24  13:21MR 18:28SS         20:10TE          4:22TS  4:52MS  6: 4SR          0: 0VT 
 3-25  14:38MR 18:28SS         20:12TE          4:19TS  5:26MS  6: 1SR          0: 0VT 
 3-26  16: 1MR 18:31SS         20:13TE          4:18TS  5:55MS  6: 0SR          0: 0VT 
 3-27  17:23MR 18:31SS         20:15TE          4:15TS          5:58SR  6:22MS  0: 0VT 
 3-28          18:32SS 18:46MR 20:16TE          4:13TS          5:55SR  6:49MS  0: 0VT 
 3-29          18:34SS 20: 7MR 20:17TE          4:10TS          5:54SR  7:16MS  0: 0VT 
 3-30          18:36SS         20:19TE 21:27MR  4: 9TS          5:52SR  7:45MS  1: 7VT 
 3-31          18:37SS         20:21TE 22:46MR  4: 7TS          5:49SR  8:18MS  2:25VT 

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