February 2000 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  14: 4MS 17:16SS         18:58TE  5:37MR  5:48TS          7:31SR         10:39VT 
 2- 2  14:52MS 17:17SS         19: 0TE          5:46TS  6:25MR  7:30SR         10:46VT 
 2- 3  15:47MS 17:19SS         19: 1TE          5:46TS  7: 7MR  7:28SR         10:44VT 
 2- 4  16:43MS 17:21SS         19: 2TE          5:45TS          7:26SR  7:43MR 10:42VT 
 2- 5          17:22SS 17:43MS 19: 4TE          5:43TS          7:25SR  8:15MR 10:39VT 
 2- 6          17:22SS 18:47MS 19: 6TE          5:41TS          7:24SR  8:45MR 10:35VT 
 2- 7          17:25SS         19: 7TE 19:52MS  5:40TS          7:22SR  9:12MR  9:48VT 
 2- 8          17:25SS         19: 7TE 20:58MS  5:40TS          7:22SR  9:40MR  8:41VT 
 2- 9          17:28SS         19:10TE 22: 7MS  5:39TS          7:19SR 10: 7MR  7:31VT 
 2-10          17:28SS         19:10TE 23:16MS  5:37TS          7:19SR 10:36MR  6:20VT 
 2-11          17:31SS         19:12TE  0:25MS  5:35TS          7:16SR 11: 7MR  5: 9VT 
 2-12          17:31SS         19:13TE  1:37MS  5:34TS          7:16SR 11:45MR  3:57VT 
 2-13          17:34SS         19:15TE  2:49MS  5:33TS          7:13SR          2:43VT 
 2-14  12:28MR 17:34SS         19:16TE  3:58MS  5:31TS          7:13SR          1:33VT 
 2-15  13:22MR 17:37SS         19:17TE  5: 1MS  5:30TS          7:10SR          0:28VT 
 2-16  14:23MR 17:37SS         19:19TE          5:28TS  5:55MS  7:10SR          0: 0VT 
 2-17  15:34MR 17:38SS         19:19TE          5:26TS  6:43MS  7: 7SR          0: 0VT 
 2-18  16:46MR 17:40SS         19:22TE          5:25TS          7: 5SR  7:22MS  0: 0VT 
 2-19          17:42SS 18: 0MR 19:22TE          5:24TS          7: 4SR  7:55MS  0: 0VT 
 2-20          17:43SS 19:12MR 19:23TE          5:22TS          7: 3SR  8:26MS  0: 0VT 
 2-21          17:45SS         19:25TE 20:22MR  5:20TS          7: 1SR  8:52MS  0:56VT 
 2-22          17:46SS         19:27TE 21:31MR  5:19TS          7: 0SR  9:19MS  2: 4VT 
 2-23          17:47SS         19:28TE 22:36MR  5:18TS          6:58SR  9:45MS  3: 7VT 
 2-24          17:49SS         19:30TE 23:40MR  5:16TS          6:55SR 10:15MS  4:10VT 
 2-25          17:51SS         19:31TE  0:42MR  5:15TS          6:55SR 10:45MS  5:10VT 
 2-26          17:52SS         19:32TE  1:40MR  5:13TS          6:52SR 11:19MS  6: 8VT 
 2-27          17:53SS         19:34TE  2:37MR  5:10TS          6:50SR 11:58MS  7: 3VT 
 2-28          17:55SS         19:34TE  3:31MR  5: 9TS          6:49SR          7:56VT 
 2-29  12:43MS 17:57SS         19:37TE  4:19MR  5: 7TS          6:48SR          8:41VT

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.