July 2001 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  17:30MR 21: 1SS         23:22TE          3: 4TS  3:19MS  5:25SR          0: 0VT 
 7- 2  18:37MR 21: 1SS         23:22TE          3: 5TS  3:55MS  5:26SR          0: 0VT 
 7- 3  19:40MR 21: 1SS         23:22TE          3: 7TS  4:37MS  5:26SR          0: 0VT 
 7- 4  20:37MR 21: 1SS         23:21TE          3: 7TS  5:25MS  5:28SR          0: 0VT 
 7- 5          21: 1SS 21:27MR 23:19TE          3:10TS          5:28SR  6:19MS  0: 0VT 
 7- 6          21: 1SS 22: 8MR 23:19TE          3:10TS          5:30SR  7:16MS  0: 0VT 
 7- 7          21: 0SS 22:45MR 23:19TE          3:12TS          5:30SR  8:18MS  0: 0VT 
 7- 8          21: 0SS 23:15MR 23:17TE          3:13TS          5:31SR  9:19MS  0: 0VT 
 7- 9          20:58SS         23:16TE 23:40MR  3:15TS          5:31SR 10:21MS  0:23VT 
 7-10          20:58SS         23:15TE  0: 4MR  3:16TS          5:33SR 11:22MS  0:49VT 
 7-11          20:58SS         23:13TE  0:25MR  3:17TS          5:34SR          1:11VT 
 7-12  12:25MS 20:58SS         23:13TE  0:47MR  3:19TS          5:34SR          1:33VT 
 7-13  13:28MS 20:57SS         23:10TE  1: 8MR  3:20TS          5:34SR          1:58VT 
 7-14  14:34MS 20:55SS         23:10TE  1:32MR  3:22TS          5:35SR          2:22VT 
 7-15  15:43MS 20:55SS         23: 8TE  2: 1MR  3:24TS          5:37SR          2:52VT 
 7-16  16:54MS 20:55SS         23: 7TE  2:35MR  3:25TS          5:37SR          3:28VT 
 7-17  18: 6MS 20:53SS         23: 6TE  3:19MR  3:27TS          5:39SR          4:13VT 
 7-18  19:16MS 20:52SS         23: 4TE          3:28TS  4:13MR  5:40SR          4:24VT 
 7-19  20:19MS 20:52SS         23: 2TE          3:31TS  5:19MR  5:40SR          4:28VT 
 7-20          20:51SS 21:15MS 23: 1TE          3:31TS          5:41SR  6:34MR  4:30VT 
 7-21          20:49SS 22: 0MS 22:58TE          3:34TS          5:43SR  7:54MR  4:35VT 
 7-22          20:49SS 22:36MS 22:58TE          3:35TS          5:43SR  9:14MR  4:37VT 
 7-23          20:47SS         22:55TE 23: 7MS  3:37TS          5:45SR 10:31MR  4:30VT 
 7-24          20:46SS         22:53TE 23:34MS  3:40TS          5:46SR 11:48MR  4: 5VT 
 7-25          20:46SS         22:52TE          3:40TS          5:48SR          3:40VT 
 7-26  13: 1MR 20:45SS         22:51TE  0:25MS  3:43TS          5:49SR          3:17VT 
 7-27  14:13MR 20:43SS         22:49TE  0:52MS  3:45TS          5:49SR          2:52VT 
 7-28  15:22MR 20:43SS         22:46TE  1:22MS  3:46TS          5:50SR          2:24VT 
 7-29  16:27MR 20:42SS         22:45TE  1:55MS  3:49TS          5:52SR          1:53VT 
 7-30  17:32MR 20:40SS         22:43TE  2:34MS  3:49TS          5:52SR          1:15VT 
 7-31  18:31MR 20:38SS         22:40TE  3:20MS  3:52TS          5:54SR          0:31VT

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.