August 2002 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

 8- 1  14:16MS 20:37SS         22:40TE  0:35MR  3:54TS          5:55SR          1:54VT 
 8- 2  15:22MS 20:37SS         22:37TE  1: 1MR  3:55TS          5:55SR          2:24VT 
 8- 3  16:29MS 20:36SS         22:36TE  1:36MR  3:57TS          5:58SR          2:59VT 
 8- 4  17:36MS 20:34SS         22:34TE  2:19MR  3:58TS          5:58SR          3:44VT 
 8- 5  18:38MS 20:32SS         22:31TE  3:13MR  4: 1TS          6: 0SR          4:42VT 
 8- 6  19:36MS 20:31SS         22:30TE          4: 3TS  4:19MR  6: 1SR          5:33VT 
 8- 7  20:22MS 20:30SS         22:28TE          4: 4TS  5:34MR  6: 1SR          5:35VT 
 8- 8          20:28SS 21: 1MS 22:25TE          4: 5TS          6: 4SR  6:52MR  5:40VT 
 8- 9          20:27SS 21:34MS 22:23TE          4: 7TS          6: 4SR  8:14MR  5:44VT 
 8-10          20:25SS 22: 1MS 22:22TE          4:10TS          6: 5SR  9:33MR  5:47VT 
 8-11          20:23SS         22:19TE 22:27MS  4:11TS          6: 7SR 10:52MR  5:44VT 
 8-12          20:22SS         22:16TE 22:51MS  4:13TS          6: 7SR          5:22VT 
 8-13  12:10MR 20:21SS         22:15TE 23:16MS  4:15TS          6:10SR          4:58VT 
 8-14  13:28MR 20:19SS         22:13TE 23:43MS  4:16TS          6:10SR          4:33VT 
 8-15  14:43MR 20:17SS         22:10TE  0:15MS  4:19TS          6:11SR          4: 4VT 
 8-16  15:55MR 20:16SS         22: 8TE  0:53MS  4:19TS          6:13SR          3:26VT 
 8-17  17: 4MR 20:13SS         22: 7TE  1:39MS  4:22TS          6:13SR          2:43VT 
 8-18  18: 4MR 20:13SS         22: 4TE  2:32MS  4:24TS          6:16SR          1:51VT 
 8-19  18:53MR 20:10SS         22: 1TE  3:34MS  4:25TS          6:16SR          0:50VT 
 8-20  19:34MR 20: 8SS         22: 0TE          4:26TS  4:39MS  6:18SR          0: 0VT 
 8-21          20: 7SS 20: 7MR 21:58TE          4:28TS  5:46MS  6:19SR          0: 0VT 
 8-22          20: 6SS 20:34MR 21:55TE          4:31TS          6:20SR  6:50MS  0: 0VT 
 8-23          20: 4SS 20:58MR 21:53TE          4:31TS          6:22SR  7:55MS  0: 0VT 
 8-24          20: 1SS 21:17MR 21:51TE          4:34TS          6:22SR  8:57MS  0: 0VT 
 8-25          20: 1SS 21:37MR 21:49TE          4:34TS          6:24SR 10: 0MS  0: 0VT 
 8-26          19:58SS         21:46TE 21:55MR  4:37TS          6:25SR 11: 3MS  0: 8VT 
 8-27          19:57SS         21:45TE 22:15MR  4:39TS          6:26SR          0:30VT 
 8-28  12: 4MS 19:55SS         21:43TE 22:36MR  4:40TS          6:28SR          0:52VT 
 8-29  13:10MS 19:52SS         21:40TE 23: 1MR  4:41TS          6:28SR          1:20VT 
 8-30  14:15MS 19:52SS         21:37TE 23:31MR  4:43TS          6:30SR          1:54VT 
 8-31  15:21MS 19:49SS         21:36TE  0: 9MR  4:45TS          6:31SR          2:32VT 

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.