July 2012 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

 7- 1  19:10MR 21: 1SS         23:22TE          3: 5TS  4:19MS  5:25SR          0: 0VT 
 7- 2  20: 8MR 21: 1SS         23:22TE          3: 7TS          5:26SR  5:28MS  0: 0VT 
 7- 3  20:57MR 21: 1SS         23:22TE          3: 7TS          5:28SR  6:41MS  0: 0VT 
 7- 4          21: 1SS 21:37MR 23:21TE          3: 9TS          5:28SR  7:55MS  0: 0VT 
 7- 5          21: 1SS 22:10MR 23:19TE          3:10TS          5:28SR  9: 7MS  0: 0VT 
 7- 6          21: 1SS 22:38MR 23:19TE          3:10TS          5:30SR 10:16MS  0: 0VT 
 7- 7          21: 0SS 23: 4MR 23:17TE          3:13TS          5:31SR 11:22MS  0: 0VT 
 7- 8          21: 0SS         23:16TE 23:28MR  3:13TS          5:31SR          0:11VT 
 7- 9  12:26MS 20:58SS         23:16TE 23:53MR  3:15TS          5:31SR          0:37VT 
 7-10  13:30MS 20:58SS         23:15TE  0:19MR  3:16TS          5:33SR          1: 4VT 
 7-11  14:31MS 20:58SS         23:13TE  0:48MR  3:17TS          5:34SR          1:34VT 
 7-12  15:31MS 20:57SS         23:12TE  1:19MR  3:19TS          5:34SR          2: 6VT 
 7-13  16:28MS 20:57SS         23:10TE  1:55MR  3:20TS          5:35SR          2:45VT 
 7-14  17:25MS 20:55SS         23:10TE  2:37MR  3:22TS          5:37SR          3:27VT 
 7-15  18:17MS 20:55SS         23: 7TE          3:25TS  3:27MR  5:37SR          4:17VT 
 7-16  19: 4MS 20:55SS         23: 7TE          3:25TS  4:22MR  5:39SR          4:18VT 
 7-17  19:46MS 20:53SS         23: 4TE          3:28TS  5:22MR  5:40SR          4:23VT 
 7-18  20:22MS 20:52SS         23: 4TE          3:30TS          5:40SR  6:25MR  4:25VT 
 7-19          20:52SS 20:55MS 23: 1TE          3:31TS          5:41SR  7:33MR  4:29VT 
 7-20          20:51SS 21:25MS 23: 1TE          3:32TS          5:43SR  8:41MR  4:31VT 
 7-21          20:49SS 21:52MS 22:58TE          3:34TS          5:43SR  9:49MR  4:36VT 
 7-22          20:49SS 22:17MS 22:57TE          3:37TS          5:45SR 11: 0MR  4:39VT 
 7-23          20:47SS 22:45MS 22:55TE          3:37TS          5:46SR          4:42VT 
 7-24  12:10MR 20:46SS         22:53TE 23:15MS  3:40TS          5:46SR          4:25VT 
 7-25  13:23MR 20:46SS         22:52TE 23:46MS  3:42TS          5:48SR          3:55VT 
 7-26  14:37MR 20:45SS         22:49TE  0:25MS  3:43TS          5:49SR          3:17VT 
 7-27  17: 0MR 20:43SS         22:47TE  1:12MS  3:46TS          5:49SR          2:34VT 
 7-28  17:28MR 20:42SS         22:46TE  2: 7MS  3:46TS          5:50SR          1:39VT 
 7-29  17:57MR 20:40SS         22:43TE  3:10MS  3:49TS          5:52SR          0:38VT 
 7-30  18:47MR 20:40SS         22:43TE          3:50TS  4:19MS  5:54SR          0: 0VT 
 7-31  19:31MR 20:38SS         22:40TE          3:52TS  5:33MS  5:55SR          0: 0VT 

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.