October 2004 Dark Sky Observing Time

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

10- 1          18:49SS 20:16MR 20:30TE          5:30TS          7:10SR 11:51MS  0: 0VT 
10- 2          18:47SS         20:28TE 20:43MR  5:31TS          7:11SR          0:15VT 
10- 3  12:58MS 18:46SS         20:25TE 21:17MR  5:31TS          7:13SR          0:52VT 
10- 4  14: 1MS 18:43SS         20:23TE 22: 0MR  5:34TS          7:13SR          1:36VT 
10- 5  14:55MS 18:42SS         20:22TE 22:52MR  5:34TS          7:15SR          2:30VT 
10- 6  15:40MS 18:40SS         20:19TE 23:51MR  5:35TS          7:16SR          3:31VT 
10- 7  16:16MS 18:37SS         20:17TE  0:55MR  5:37TS          7:18SR          4:38VT 
10- 8  16:43MS 18:36SS         20:16TE  2: 4MR  5:39TS          7:19SR          5:47VT 
10- 9  17:10MS 18:34SS         20:15TE  3:13MR  5:40TS          7:20SR          6:58VT 
10-10  17:31MS 18:32SS         20:13TE  4:25MR  5:41TS          7:22SR          8:11VT 
10-11  17:49MS 18:31SS         20:10TE  5:37MR  5:43TS          7:22SR          9:26VT 
10-12  18: 7MS 18:28SS         20: 8TE          5:43TS  6:49MR  7:25SR          9:35VT 
10-13  18:25MS 18:27SS         20: 7TE          5:46TS          7:25SR  8: 6MR  9:38VT 
10-14          18:25SS 18:46MS 20: 6TE          5:46TS          7:26SR  9:26MR  9:40VT 
10-15          18:23SS 19:12MS 20: 4TE          5:48TS          7:28SR 10:48MR  9:43VT 
10-16          18:22SS 19:43MS 20: 1TE          5:49TS          7:30SR          9:47VT 
10-17  12: 8MR 18:19SS         20: 1TE 20:25MS  5:50TS          7:31SR          9:25VT 
10-18  13:23MR 18:19SS         19:58TE 21:19MS  5:52TS          7:33SR          8:32VT 
10-19  14:26MR 18:16SS         19:57TE 22:28MS  5:52TS          7:34SR          7:24VT 
10-20  15:15MR 18:15SS         19:55TE 23:45MS  5:55TS          7:34SR          6:10VT 
10-21  15:52MR 18:13SS         19:53TE  1: 4MS  5:55TS          7:37SR          4:51VT 
10-22  16:19MR 18:12SS         19:52TE  2:22MS  5:56TS          7:37SR          3:34VT 
10-23  16:43MR 18:10SS         19:51TE  3:37MS  5:58TS          7:39SR          2:21VT 
10-24  17: 1MR 18: 8SS         19:49TE  4:52MS  6: 0TS          7:40SR          1: 7VT 
10-25  17:19MR 18: 7SS         19:47TE          6: 1TS  6: 3MS  7:41SR          0: 0VT 
10-26  17:37MR 18: 4SS         19:46TE          6: 1TS  7:13MS  7:43SR          0: 0VT 
10-27  17:57MR 18: 4SS         19:45TE          6: 4TS          7:45SR  8:23MS  0: 0VT 
10-28          18: 1SS 18:17MR 19:43TE          6: 4TS          7:46SR  9:34MS  0: 0VT 
10-29          18: 1SS 18:43MR 19:42TE          6: 5TS          7:48SR 10:43MS  0: 0VT 
10-30          17:58SS 19:15MR 19:40TE          6: 7TS          7:49SR 11:48MS  0: 0VT 
Daylight Saving Time ends October 31, 2:00 am. The below times are PST
10-31          16:58SS         18:38TE 18:53MR  5: 9TS          6:50SR 11:46MS  0:15VT 

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.