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         18:25TE 23:36MS  6: 4TS          7:50SR          6:28VT 
 1- 2  12:13MR 16:38SS         18:25TE  0:40MS  6: 4TS          7:50SR          5:23VT 
 1- 3  12:37MR 16:40SS         18:25TE  1:47MS  6: 4TS          7:49SR          4:16VT 
 1- 4  13: 1MR 16:40SS         18:27TE  2:58MS  6: 4TS          7:49SR          3: 6VT 
 1- 5  13:31MR 16:42SS         18:28TE  4:10MS  6: 4TS          7:49SR          1:53VT 
 1- 6  14: 7MR 16:43SS         18:28TE  5:25MS  6: 4TS          7:49SR          0:39VT 
 1- 7  14:52MR 16:43SS         18:30TE          6: 3TS  6:37MS  7:49SR          0: 0VT 
 1- 8  15:52MR 16:45SS         18:31TE          6: 3TS  7:45MS  7:49SR          0: 0VT 
 1- 9          16:46SS 16:52MR 18:31TE          6: 3TS          7:49SR  8:41MS  0: 0VT 
 1-10          16:46SS 18: 7MR 18:32TE          6: 3TS          7:49SR  9:27MS  0: 0VT 
 1-11          16:47SS         18:34TE 19:25MR  6: 1TS          7:48SR 10: 6MS  0:51VT 
 1-12          16:49SS         18:34TE 20:45MR  6: 1TS          7:48SR 10:37MS  2:10VT 
 1-13          16:51SS         18:36TE 22: 0MR  6: 1TS          7:46SR 11: 6MS  3:23VT 
 1-14          16:52SS         18:37TE 23:13MR  6: 1TS          7:46SR 11:31MS  4:35VT 
 1-15          16:52SS         18:38TE  0:24MR  6: 1TS          7:46SR 11:56MS  5:45VT 
 1-16          16:55SS         18:40TE  1:31MR  6: 0TS          7:45SR          6:51VT 
 1-17  12:22MS 16:55SS         18:40TE  2:37MR  6: 0TS          7:45SR          7:56VT 
 1-18  12:52MS 16:57SS         18:42TE  3:42MR  5:58TS          7:43SR          8:59VT 
 1-19  13:23MS 16:58SS         18:43TE  4:43MR  5:58TS          7:43SR         10: 0VT 
 1-20  14: 0MS 17: 0SS         18:45TE  5:41MR  5:58TS          7:41SR         10:56VT 
 1-21  14:41MS 17: 1SS         18:46TE          5:56TS  6:34MR  7:40SR         11:10VT 
 1-22  15:31MS 17: 2SS         18:46TE          5:56TS  7:19MR  7:40SR         11:10VT 
 1-23  16:23MS 17: 4SS         18:47TE          5:55TS          7:40SR  8: 0MR 11: 7VT 
 1-24          17: 6SS 17:22MS 18:49TE          5:55TS          7:39SR  8:34MR 11: 5VT 
 1-25          17: 7SS 18:22MS 18:51TE          5:54TS          7:37SR  9: 3MR 11: 2VT 
 1-26          17: 8SS         18:52TE 19:22MS  5:52TS          7:37SR  9:30MR 10:30VT 
 1-27          17:10SS         18:52TE 20:25MS  5:52TS          7:35SR  9:53MR  9:26VT 
 1-28          17:10SS         18:55TE 21:27MS  5:50TS          7:34SR 10:16MR  8:23VT 
 1-29          17:13SS         18:55TE 22:31MS  5:49TS          7:33SR 10:40MR  7:18VT 
 1-30          17:13SS         18:57TE 23:34MS  5:49TS          7:31SR 11: 4MR  6:14VT 
 1-31          17:16SS         18:58TE  0:42MS  5:48TS          7:31SR 11:31MR  5: 6VT 

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