July 2008 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  20:22MS 21: 1SS         23:22TE          3: 4TS  4:31MR  5:25SR          3:42VT 
 7- 2          21: 1SS 21:17MS 23:22TE          3: 7TS          5:26SR  5:50MR  3:44VT 
 7- 3          21: 1SS 22: 0MS 23:22TE          3: 7TS          5:28SR  7:15MR  3:45VT 
 7- 4          21: 1SS 22:31MS 23:21TE          3: 9TS          5:28SR  8:36MR  3:47VT 
 7- 5          21: 1SS 22:57MS 23:19TE          3:10TS          5:28SR  9:52MR  3:50VT 
 7- 6          21: 1SS 23:16MS 23:19TE          3:10TS          5:30SR 11: 6MR  3:51VT 
 7- 7          21: 0SS         23:17TE 23:36MS  3:13TS          5:31SR          3:36VT 
 7- 8  12:15MR 21: 0SS         23:16TE 23:52MS  3:13TS          5:31SR          3:21VT 
 7- 9  13:22MR 20:58SS         23:16TE  0:12MS  3:15TS          5:31SR          3: 2VT 
 7-10  14:30MR 20:58SS         23:15TE  0:32MS  3:16TS          5:33SR          2:44VT 
 7-11  15:37MR 20:58SS         23:13TE  0:55MS  3:17TS          5:34SR          2:22VT 
 7-12  16:42MR 20:58SS         23:12TE  1:25MS  3:19TS          5:34SR          1:54VT 
 7-13  17:46MR 20:57SS         23:10TE  2: 1MS  3:20TS          5:35SR          1:19VT 
 7-14  18:46MR 20:55SS         23:10TE  2:46MS  3:22TS          5:37SR          0:36VT 
 7-15  19:37MR 20:55SS         23: 7TE          3:25TS  3:40MS  5:37SR          0: 0VT 
 7-16  20:21MR 20:55SS         23: 7TE          3:25TS  4:41MS  5:39SR          0: 0VT 
 7-17          20:53SS 20:55MR 23: 4TE          3:28TS          5:40SR  5:49MS  0: 0VT 
 7-18          20:52SS 21:23MR 23: 4TE          3:30TS          5:40SR  6:58MS  0: 0VT 
 7-19          20:52SS 21:47MR 23: 1TE          3:31TS          5:41SR  8: 8MS  0: 0VT 
 7-20          20:51SS 22: 7MR 23: 1TE          3:32TS          5:43SR  9:18MS  0: 0VT 
 7-21          20:49SS 22:27MR 22:58TE          3:34TS          5:43SR 10:28MS  0: 0VT 
 7-22          20:49SS 22:45MR 22:57TE          3:37TS          5:45SR 11:40MS  0: 0VT 
 7-23          20:47SS         22:55TE 23: 4MR  3:37TS          5:46SR          0: 8VT 
 7-24  12:55MS 20:46SS         22:53TE 23:25MR  3:40TS          5:46SR          0:31VT 
 7-25  14:13MS 20:46SS         22:52TE 23:52MR  3:42TS          5:48SR          1: 0VT 
 7-26  15:33MS 20:45SS         22:49TE  0:27MR  3:43TS          5:49SR          1:37VT 
 7-27  16:49MS 20:43SS         22:47TE  1:12MR  3:45TS          5:49SR          2:24VT 
 7-28  18: 4MS 20:42SS         22:46TE  2:12MR  3:46TS          5:50SR          3:25VT 
 7-29  19: 6MS 20:40SS         22:45TE  3:24MR  3:49TS          5:52SR          4:39VT 
 7-30  19:52MS 20:40SS         22:43TE          3:50TS  4:45MR  5:54SR          5: 7VT 
 7-31  20:28MS 20:38SS         22:40TE          3:52TS          5:55SR  6: 7MR  5:12VT 

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.