February 2002 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 22:22MR  5:48TS          7:30SR 10:25MS  3:22VT 
 2- 2          17:17SS         19: 1TE 23:37MR  5:46TS          7:28SR 10:52MS  4:36VT 
 2- 3          17:19SS         19: 1TE  0:52MR  5:45TS          7:28SR 11:19MS  5:50VT 
 2- 4          17:21SS         19: 4TE  2: 4MR  5:43TS          7:25SR 11:49MS  6:59VT 
 2- 5          17:22SS         19: 4TE  3:13MR  5:43TS          7:25SR          8: 9VT 
 2- 6  12:25MS 17:23SS         19: 6TE  4:19MR  5:41TS          7:24SR          9:13VT 
 2- 7  13: 7MS 17:25SS         19: 7TE  5:19MR  5:40TS          7:22SR         10:11VT 
 2- 8  13:56MS 17:27SS         19: 8TE          5:39TS  6:10MR  7:20SR         10:30VT 
 2- 9  14:52MS 17:28SS         19:10TE          5:37TS  6:52MR  7:19SR         10:27VT 
 2-10  15:55MS 17:30SS         19:12TE          5:37TS          7:18SR  7:28MR 10:24VT 
 2-11  16:57MS 17:31SS         19:13TE          5:34TS          7:16SR  7:56MR 10:21VT 
 2-12          17:32SS 18: 1MS 19:13TE          5:34TS          7:15SR  8:21MR 10:20VT 
 2-13          17:34SS 19: 2MS 19:16TE          5:33TS          7:13SR  8:42MR 10:16VT 
 2-14          17:36SS         19:16TE 20: 4MS  5:31TS          7:11SR  9: 3MR  9:26VT 
 2-15          17:37SS         19:17TE 21: 7MS  5:30TS          7:10SR  9:22MR  8:22VT 
 2-16          17:38SS         19:19TE 22: 8MS  5:28TS          7: 9SR  9:42MR  7:19VT 
 2-17          17:40SS         19:21TE 23:10MS  5:26TS          7: 7SR 10: 4MR  6:16VT 
 2-18          17:42SS         19:22TE  0:15MS  5:25TS          7: 5SR 10:30MR  5:10VT 
 2-19          17:43SS         19:23TE  1:22MS  5:24TS          7: 4SR 10:58MR  4: 1VT 
 2-20          17:45SS         19:25TE  2:28MS  5:22TS          7: 1SR 11:36MR  2:53VT 
 2-21          17:46SS         19:27TE  3:35MS  5:19TS          7: 1SR          1:43VT 
 2-22  12:22MR 17:46SS         19:28TE  4:37MS  5:19TS          6:58SR          0:41VT 
 2-23  13:22MR 17:49SS         19:28TE          5:16TS  5:33MS  6:56SR          0: 0VT 
 2-24  14:31MR 17:49SS         19:31TE          5:15TS  6:19MS  6:55SR          0: 0VT 
 2-25  15:51MR 17:52SS         19:31TE          5:13TS          6:54SR  6:58MS  0: 0VT 
 2-26  17:12MR 17:52SS         19:32TE          5:11TS          6:52SR  7:31MS  0: 0VT 
 2-27          17:53SS 18:34MR 19:34TE          5:10TS          6:49SR  8: 0MS  0: 0VT 
 2-28          17:55SS         19:36TE 19:57MR  5: 7TS          6:49SR  8:26MS  0:21VT 

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.