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

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