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

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