February 2006 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

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

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.