July 2007 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          21: 2SS 22:27MR 23:23TE          3: 4TS          5:25SR  7:25MS  0: 0VT 
 7- 2          21: 1SS 22:55MR 23:22TE          3: 5TS          5:26SR  8:41MS  0: 0VT 
 7- 3          21: 1SS 23:19MR 23:22TE          3: 7TS          5:26SR  9:59MS  0: 0VT 
 7- 4          21: 1SS         23:22TE 23:40MR  3: 7TS          5:28SR 11:13MS  0:17VT 
 7- 5          21: 1SS         23:21TE 23:58MR  3: 9TS          5:28SR          0:37VT 
 7- 6  12:31MS 21: 1SS         23:19TE  0:18MR  3:10TS          5:28SR          0:58VT 
 7- 7  13:48MS 21: 1SS         23:19TE  0:38MR  3:12TS          5:30SR          1:18VT 
 7- 8  15: 7MS 21: 0SS         23:17TE  1: 2MR  3:13TS          5:31SR          1:45VT 
 7- 9  16:30MS 21: 0SS         23:16TE  1:32MR  3:13TS          5:31SR          2:16VT 
 7-10  17:52MS 20:58SS         23:16TE  2:13MR  3:16TS          5:31SR          2:57VT 
 7-11  19: 7MS 20:58SS         23:15TE  3: 5MR  3:16TS          5:33SR          3:50VT 
 7-12  20:10MS 20:58SS         23:13TE          3:19TS  4:11MR  5:34SR          4: 5VT 
 7-13          20:57SS 21: 0MS 23:12TE          3:19TS  5:25MR  5:34SR          4: 7VT 
 7-14          20:57SS 21:37MS 23:10TE          3:22TS          5:35SR  6:41MR  4:11VT 
 7-15          20:55SS 22: 4MS 23: 8TE          3:22TS          5:37SR  7:56MR  4:14VT 
 7-16          20:55SS 22:27MS 23: 7TE          3:25TS          5:37SR  9: 8MR  4:17VT 
 7-17          20:53SS 22:45MS 23: 7TE          3:27TS          5:39SR 10:16MR  4:19VT 
 7-18          20:53SS 23: 1MS 23: 4TE          3:28TS          5:40SR 11:22MR  4:23VT 
 7-19          20:52SS         23: 2TE 23:16MS  3:30TS          5:40SR          4:13VT 
 7-20  12:26MR 20:52SS         23: 1TE 23:32MS  3:31TS          5:41SR          3:59VT 
 7-21  13:31MR 20:51SS         23: 0TE 23:51MS  3:32TS          5:43SR          3:41VT 
 7-22  14:37MR 20:49SS         22:58TE  0:12MS  3:34TS          5:43SR          3:22VT 
 7-23  15:45MR 20:49SS         22:57TE  0:37MS  3:37TS          5:45SR          3: 0VT 
 7-24  16:51MR 20:47SS         22:55TE  1:10MS  3:39TS          5:46SR          2:28VT 
 7-25  17:57MR 20:46SS         22:52TE  1:52MS  3:40TS          5:46SR          1:47VT 
 7-26  18:55MR 20:46SS         22:52TE  2:46MS  3:42TS          5:48SR          0:55VT 
 7-27  19:46MR 20:45SS         22:49TE          3:43TS  3:52MS  5:49SR          0: 0VT 
 7-28  20:25MR 20:43SS         22:47TE          3:46TS  5: 7MS  5:49SR          0: 0VT 
 7-29          20:42SS 20:58MR 22:46TE          3:47TS          5:52SR  6:25MS  0: 0VT 
 7-30          20:40SS 21:22MR 22:43TE          3:49TS          5:52SR  7:43MS  0: 0VT 
 7-31          20:40SS 21:45MR 22:42TE          3:50TS          5:54SR  9: 2MS  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.