February 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

 2- 1          17:16SS         18:58TE  4:45MR  5:48TS          7:31SR          9:46VT 
 2- 2  12:38MS 17:17SS         19: 0TE  5:37MR  5:46TS          7:28SR         10:37VT 
 2- 3  13:34MS 17:19SS         19: 1TE          5:46TS  6:20MR  7:28SR         10:44VT 
 2- 4  14:40MS 17:21SS         19: 2TE          5:45TS  6:55MR  7:26SR         10:42VT 
 2- 5  15:54MS 17:22SS         19: 4TE          5:43TS  7:24MR  7:25SR         10:39VT 
 2- 6  17: 7MS 17:23SS         19: 6TE          5:41TS          7:24SR  7:46MR 10:35VT 
 2- 7          17:25SS 18:22MS 19: 7TE          5:40TS          7:22SR  8: 7MR 10:33VT 
 2- 8          17:25SS         19: 7TE 19:37MS  5:40TS          7:22SR  8:26MR 10: 2VT 
 2- 9          17:28SS         19:10TE 20:52MS  5:39TS          7:19SR  8:45MR  8:46VT 
 2-10          17:28SS         19:10TE 22: 8MS  5:37TS          7:19SR  9: 6MR  7:28VT 
 2-11          17:31SS         19:12TE 23:28MS  5:35TS          7:16SR  9:30MR  6: 7VT 
 2-12          17:31SS         19:13TE  0:48MS  5:34TS          7:16SR 10: 0MR  4:46VT 
 2-13          17:34SS         19:15TE  2: 9MS  5:33TS          7:13SR 10:37MR  3:24VT 
 2-14          17:34SS         19:16TE  3:24MS  5:31TS          7:13SR 11:28MR  2: 7VT 
 2-15          17:37SS         19:17TE  4:30MS  5:30TS          7:10SR          1: 0VT 
 2-16  12:31MR 17:37SS         19:19TE  5:22MS  5:28TS          7:10SR          0: 6VT 
 2-17  13:45MR 17:40SS         19:21TE          5:26TS  6: 1MS  7: 7SR          0: 0VT 
 2-18  15: 3MR 17:40SS         19:22TE          5:25TS  6:31MS  7: 5SR          0: 0VT 
 2-19  16:21MR 17:42SS         19:22TE          5:24TS  6:55MS  7: 4SR          0: 0VT 
 2-20  17:36MR 17:43SS         19:25TE          5:22TS          7: 3SR  7:16MS  0: 0VT 
 2-21          17:45SS 18:47MR 19:25TE          5:20TS          7: 1SR  7:33MS  0: 0VT 
 2-22          17:46SS         19:27TE 19:57MR  5:19TS          7: 0SR  7:49MS  0:30VT 
 2-23          17:47SS         19:28TE 21: 4MR  5:18TS          6:58SR  8: 7MS  1:35VT 
 2-24          17:49SS         19:30TE 22:12MR  5:16TS          6:55SR  8:26MS  2:42VT 
 2-25          17:51SS         19:31TE 23:17MR  5:13TS          6:55SR  8:48MS  3:46VT 
 2-26          17:52SS         19:32TE  0:25MR  5:13TS          6:52SR  9:15MS  4:52VT 
 2-27          17:53SS         19:34TE  1:31MR  5:10TS          6:50SR  9:48MS  5:56VT 
 2-28          17:55SS         19:36TE  2:32MR  5: 9TS          6:49SR 10:30MS  6:56VT 
 2-29          17:57SS         19:37TE  3:28MR  5: 7TS          6:48SR 11:21MS  7:50VT 

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.