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 18:34MS  6: 4TS          7:50SR 10:13MR 11:29VT 
 1- 2          16:37SS         18:25TE 20: 1MS  6: 4TS          7:50SR 10:38MR 10: 2VT 
 1- 3          16:38SS         18:25TE 21:23MS  6: 4TS          7:50SR 11: 0MR  8:40VT 
 1- 4          16:40SS         18:27TE 22:43MS  6: 4TS          7:49SR 11:19MR  7:20VT 
 1- 5          16:40SS         18:28TE          6: 4TS          7:49SR 11:37MR  6: 4VT 
 1- 6          16:42SS         18:28TE  1:16MS  6: 4TS          7:49SR 11:56MR  4:48VT 
 1- 7          16:43SS         18:30TE  2:31MS  6: 3TS          7:49SR          3:31VT 
 1- 8  12:19MR 16:45SS         18:31TE  3:46MS  6: 3TS          7:49SR          2:16VT 
 1- 9  12:46MR 16:46SS         18:31TE  4:58MS  6: 3TS          7:49SR          1: 4VT 
 1-10  13:21MR 16:46SS         18:32TE          6: 3TS  6: 7MS  7:49SR          0: 0VT 
 1-11  14: 4MR 16:47SS         18:34TE          6: 1TS  7: 5MS  7:48SR          0: 0VT 
 1-12  14:58MR 16:49SS         18:34TE          6: 1TS          7:48SR  7:54MS  0: 0VT 
 1-13  14:55MR 16:51SS         18:36TE          6: 1TS          7:46SR  8:30MS  0: 0VT 
 1-14          16:52SS 17: 6MR 18:37TE          6: 1TS          7:46SR  9: 0MS  0: 0VT 
 1-15          16:52SS 18:13MR 18:38TE          6: 1TS          7:46SR  9:22MS  0: 0VT 
 1-16          16:53SS         18:40TE 19:19MR  6: 0TS          7:45SR  9:41MS  0:39VT 
 1-17          16:55SS         18:40TE 20:25MR  6: 0TS          7:45SR  9:59MS  1:44VT 
 1-18          16:57SS         18:42TE 21:28MR  5:58TS          7:43SR 10:13MS  2:46VT 
 1-19          16:58SS         18:43TE 22:32MR  5:58TS          7:43SR 10:28MS  3:49VT 
 1-20          17: 0SS         18:43TE 23:37MR  5:58TS          7:41SR 10:45MS  4:53VT 
 1-21          17: 1SS         18:46TE  0:45MR  5:56TS          7:41SR 11: 3MS  5:58VT 
 1-22          17: 2SS         18:46TE  1:55MR  5:56TS          7:40SR 11:25MS  7: 8VT 
 1-23          17: 4SS         18:47TE  3: 9MR  5:55TS          7:40SR 11:53MS  8:21VT 
 1-24          17: 4SS         18:49TE  4:25MR  5:55TS          7:39SR          9:35VT 
 1-25  12:34MS 17: 7SS         18:51TE  5:37MR  5:54TS          7:37SR         10:46VT 
 1-26  13:28MS 17: 7SS         18:52TE          5:52TS  6:40MR  7:37SR         11: 0VT 
 1-27  14:38MS 17:10SS         18:52TE          5:52TS  7:31MR  7:35SR         11: 0VT 
 1-28  16: 1MS 17:10SS         18:53TE          5:52TS          7:34SR  8: 8MR 10:58VT 
 1-29          17:13SS 17:30MS 18:55TE          5:50TS          7:34SR  8:37MR 10:55VT 
 1-30          17:13SS         18:57TE 18:57MS  5:49TS          7:31SR  9: 2MR 10:52VT 
 1-31          17:15SS         18:58TE 20:22MS  5:49TS          7:31SR  9:22MR  9:26VT 

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