February 2005 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  1:23MR  5:46TS          7:30SR 11: 0MS  6:24VT 
 2- 2          17:19SS         19: 1TE  2:42MR  5:46TS          7:28SR 11:31MS  7:40VT 
 2- 3          17:19SS         19: 2TE  4: 1MR  5:45TS          7:26SR          8:58VT 
 2- 4  12:13MS 17:22SS         19: 4TE  5:16MR  5:43TS          7:25SR         10:11VT 
 2- 5  13:11MS 17:22SS         19: 4TE          5:43TS  6:19MR  7:25SR         10:38VT 
 2- 6  14:25MS 17:25SS         19: 7TE          5:41TS  7: 9MR  7:22SR         10:34VT 
 2- 7  15:51MS 17:25SS         19: 7TE          5:40TS          7:22SR  7:46MR 10:32VT 
 2- 8  17:16MS 17:28SS         19: 8TE          5:39TS          7:20SR  8:14MR 10:30VT 
 2- 9          17:28SS 18:42MS 19:10TE          5:37TS          7:19SR  8:37MR 10:27VT 
 2-10          17:30SS         19:12TE 20: 2MS  5:35TS          7:18SR  8:56MR  9:33VT 
 2-11          17:31SS         19:13TE 21:19MS  5:34TS          7:16SR  9:15MR  8:15VT 
 2-12          17:32SS         19:15TE 22:34MS  5:34TS          7:15SR  9:34MR  6:59VT 
 2-13          17:34SS         19:16TE 23:47MS  5:31TS          7:13SR  9:55MR  5:44VT 
 2-14          17:36SS         19:16TE  0:58MS  5:31TS          7:11SR 10:19MR  4:32VT 
 2-15          17:37SS         19:19TE  2: 9MS  5:28TS          7:10SR 10:49MR  3:19VT 
 2-16          17:38SS         19:19TE  3:15MS  5:28TS          7: 7SR 11:25MR  2:13VT 
 2-17          17:40SS         19:21TE  4:16MS  5:25TS          7: 7SR          1: 9VT 
 2-18  12:10MR 17:42SS         19:22TE  5: 7MS  5:25TS          7: 4SR          0:18VT 
 2-19  13: 4MR 17:43SS         19:23TE          5:22TS  5:49MS  7: 4SR          0: 0VT 
 2-20  14: 4MR 17:45SS         19:25TE          5:22TS  6:22MS  7: 1SR          0: 0VT 
 2-21  15:10MR 17:46SS         19:27TE          5:19TS  6:49MS  7: 0SR          0: 0VT 
 2-22  16:19MR 17:47SS         19:28TE          5:18TS          6:58SR  7:11MS  0: 0VT 
 2-23  17:27MR 17:49SS         19:30TE          5:16TS          6:56SR  7:31MS  0: 0VT 
 2-24          17:51SS 18:34MR 19:31TE          5:15TS          6:55SR  7:48MS  0: 0VT 
 2-25          17:52SS         19:31TE 19:42MR  5:13TS          6:52SR  8: 4MS  0:10VT 
 2-26          17:52SS         19:34TE 20:49MR  5:10TS          6:52SR  8:22MS  1:15VT 
 2-27          17:55SS         19:34TE 22: 0MR  5:10TS          6:49SR  8:41MS  2:25VT 
 2-28          17:55SS         19:37TE 23:13MR  5: 7TS          6:48SR  9: 3MS  3:36VT 

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.