January 2008 Dark Sky Observing Time

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

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.