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

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