October 2012 Dark Sky Observing Time

The dark sky table shows the Pacific Daylight Saving Time (PDT) 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

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

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.