October 2010 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  15:19MS 18:49SS         20:31TE  0:42MR  5:28TS          7:10SR          4:11VT 
10- 2  15:55MS 18:47SS         20:28TE  2: 0MR  5:31TS          7:10SR          5:31VT 
10- 3  16:27MS 18:46SS         20:27TE  3:17MR  5:31TS          7:11SR          6:50VT 
10- 4  16:53MS 18:45SS         20:25TE  4:37MR  5:33TS          7:13SR          8:12VT 
10- 5  17:21MS 18:43SS         20:22TE          5:34TS  5:58MR  7:15SR          9:12VT 
10- 6  17:46MS 18:40SS         20:21TE          5:35TS          7:16SR  7:19MR  9:15VT 
10- 7  18:15MS 18:38SS         20:19TE          5:37TS          7:16SR  8:41MR  9:17VT 
10- 8          18:37SS 18:46MS 20:16TE          5:37TS          7:19SR 10: 0MR  9:21VT 
10- 9          18:34SS 19:22MS 20:15TE          5:40TS          7:19SR 11:13MR  9:25VT 
10-10          18:34SS 20: 7MS 20:13TE          5:40TS          7:20SR          9:27VT 
10-11  12:19MR 18:31SS         20:12TE 20:58MS  5:41TS          7:22SR          8:43VT 
10-12  13:16MR 18:30SS         20:10TE 21:57MS  5:43TS          7:24SR          7:46VT 
10-13  14: 1MR 18:28SS         20: 7TE 23: 0MS  5:45TS          7:25SR          6:45VT 
10-14  14:38MR 18:25SS         20: 6TE  0: 4MS  5:46TS          7:26SR          5:42VT 
10-15  15: 8MR 18:25SS         20: 4TE  1: 7MS  5:48TS          7:28SR          4:40VT 
10-16  15:34MR 18:22SS         20: 2TE  2:10MS  5:49TS          7:28SR          3:38VT 
10-17  15:55MR 18:21SS         20: 1TE  3:13MS  5:49TS          7:31SR          2:35VT 
10-18  16:16MR 18:19SS         20: 0TE  4:15MS  5:50TS          7:31SR          1:35VT 
10-19  17: 0MR 18:17SS         19:58TE  5:16MS  5:52TS          7:33SR          0:36VT 
10-20  17: 8MR 18:16SS         19:55TE          5:54TS  6:19MS  7:34SR          0: 0VT 
10-21  17:16MR 18:13SS         19:55TE          5:55TS  7:25MS  7:35SR          0: 0VT 
10-22  17:42MR 18:13SS         19:52TE          5:56TS          7:37SR  8:30MS  0: 0VT 
10-23          18:10SS 18:10MR 19:52TE          5:58TS          7:39SR  9:36MS  0: 0VT 
10-24          18: 8SS 18:46MR 19:49TE          5:58TS          7:40SR 10:40MS  0: 0VT 
10-25          18: 7SS 19:30MR 19:49TE          6: 1TS          7:41SR 11:40MS  0: 0VT 
10-26          18: 6SS         19:46TE 20:22MR  6: 1TS          7:43SR          0:35VT 
10-27  12:33MS 18: 4SS         19:46TE 21:23MR  6: 3TS          7:43SR          1:37VT 
10-28  13:18MS 18: 2SS         19:43TE 22:32MR  6: 4TS          7:46SR          2:49VT 
10-29  13:55MS 18: 1SS         19:43TE 23:46MR  6: 5TS          7:46SR          4: 3VT 
10-30  14:28MS 18: 0SS         19:40TE  1: 1MR  6: 7TS          7:49SR          5:21VT 
10-31  14:55MS 17:58SS         19:40TE  2:17MR  6: 7TS          7:49SR          6:37VT 

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.