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