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

 1- 1          16:37SS         18:23TE 19:27MR  6: 4TS          7:50SR 10:36MS  1: 3VT 
 1- 2          16:37SS         18:25TE 20:46MR  6: 4TS          7:50SR 11: 7MS  2:21VT 
 1- 3          16:38SS         18:25TE 22: 4MR  6: 4TS          7:49SR 11:34MS  3:38VT 
 1- 4          16:40SS         18:27TE 23:19MR  6: 4TS          7:49SR 11:58MS  4:52VT 
 1- 5          16:40SS         18:28TE  0:35MR  6: 4TS          7:49SR          6: 6VT 
 1- 6  12:22MS 16:42SS         18:28TE  1:47MR  6: 4TS          7:49SR          7:19VT 
 1- 7  12:48MS 16:43SS         18:30TE  3: 1MR  6: 3TS          7:49SR          8:30VT 
 1- 8  13:16MS 16:45SS         18:31TE  4:11MR  6: 3TS          7:49SR          9:40VT 
 1- 9  13:48MS 16:46SS         18:31TE  5:22MR  6: 3TS          7:49SR         10:50VT 
 1-10  14:25MS 16:46SS         18:32TE          6: 3TS  6:25MR  7:49SR         11:30VT 
 1-11  15:10MS 16:47SS         18:34TE          6: 1TS  7:24MR  7:48SR         11:27VT 
 1-12  16: 2MS 16:49SS         18:34TE          6: 1TS          7:48SR  8:12MR 11:27VT 
 1-13          16:51SS 17: 1MS 18:36TE          6: 1TS          7:46SR  8:52MR 11:25VT 
 1-14          16:52SS 18: 4MS 18:37TE          6: 1TS          7:46SR  9:26MR 11:23VT 
 1-15          16:52SS         18:37TE 19: 7MS  6: 1TS          7:46SR  9:53MR 10:53VT 
 1-16          16:53SS         18:40TE 20:10MS  6: 0TS          7:45SR 10:18MR  9:49VT 
 1-17          16:55SS         18:40TE 21:13MS  6: 0TS          7:45SR 10:38MR  8:46VT 
 1-18          16:57SS         18:42TE 22:15MS  5:58TS          7:43SR 10:58MR  7:43VT 
 1-19          16:58SS         18:43TE 23:16MS  5:58TS          7:43SR 11:19MR  6:42VT 
 1-20          17: 0SS         18:43TE  0:19MS  5:58TS          7:41SR 11:40MR  5:39VT 
 1-21          17: 1SS         18:46TE  1:22MS  5:56TS          7:41SR          4:33VT 
 1-22  12: 3MR 17: 2SS         18:46TE  2:28MS  5:56TS          7:40SR          3:28VT 
 1-23  12:31MR 17: 4SS         18:47TE  3:37MS  5:55TS          7:40SR          2:17VT 
 1-24  13: 4MR 17: 4SS         18:49TE  4:46MS  5:55TS          7:39SR          1: 8VT 
 1-25  13:46MR 17: 7SS         18:51TE          5:54TS  5:54MS  7:37SR          0: 0VT 
 1-26  14:40MR 17: 7SS         18:52TE          5:52TS  6:55MS  7:37SR          0: 0VT 
 1-27  15:50MR 17:10SS         18:52TE          5:52TS          7:35SR  7:46MS  0: 0VT 
 1-28  17: 1MR 17:10SS         18:53TE          5:52TS          7:34SR  8:30MS  0: 0VT 
 1-29          17:12SS 18:22MR 18:55TE          5:50TS          7:34SR  9: 4MS  0: 0VT 
 1-30          17:13SS         18:57TE 19:43MR  5:49TS          7:33SR  9:34MS  0:46VT 
 1-31          17:15SS         18:58TE 21: 2MR  5:49TS          7:31SR 10: 1MS  2: 4VT 

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