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

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.

© 1998-2003 David Haworth