September 2006 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

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

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.