May 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

 5- 1  20: 7MR 20:16SS         22:13TE          4: 1TS  5:40MS  5:56SR          0: 0VT 
 5- 2          20:17SS 21:15MR 22:15TE          3:58TS          5:55SR  6: 5MS  0: 0VT 
 5- 3          20:19SS         22:16TE 22:22MR  3:57TS          5:54SR  6:39MS  0: 5VT 
 5- 4          20:21SS         22:19TE 23:27MR  3:55TS          5:52SR  7:20MS  1: 7VT 
 5- 5          20:22SS         22:19TE  0:25MR  3:52TS          5:50SR  8:15MS  2: 5VT 
 5- 6          20:22SS         22:22TE  1:13MR  3:50TS          5:49SR  9:18MS  2:51VT 
 5- 7          20:23SS         22:23TE  1:52MR  3:49TS          5:49SR 10:31MS  3:28VT 
 5- 8          20:25SS         22:25TE  2:22MR  3:46TS          5:46SR 11:46MS  3:57VT 
 5- 9          20:27SS         22:28TE  2:47MR  3:45TS          5:46SR          4:19VT 
 5-10  13: 3MS 20:28SS         22:30TE  3:10MR  3:43TS          5:45SR          4:40VT 
 5-11  14:21MS 20:28SS         22:31TE  3:30MR  3:40TS          5:43SR          4:58VT 
 5-12  15:38MS 20:30SS         22:34TE          3:39TS  3:49MR  5:41SR          5: 4VT 
 5-13  17: 0MS 20:31SS         22:34TE          3:37TS  4:10MR  5:40SR          5: 2VT 
 5-14  18:23MS 20:32SS         22:37TE          3:34TS  4:34MR  5:40SR          4:57VT 
 5-15  19:51MS 20:34SS         22:38TE          3:34TS  5: 5MR  5:39SR          4:55VT 
 5-16          20:34SS 21:16MS 22:40TE          3:31TS          5:37SR  5:46MR  4:51VT 
 5-17          20:36SS 22:37MS 22:43TE          3:30TS          5:37SR  6:37MR  4:46VT 
 5-18          20:37SS         22:45TE 23:43MS  3:28TS          5:35SR  7:43MR  3:44VT 
 5-19          20:38SS         22:46TE  0:35MS  3:27TS          5:34SR  8:56MR  2:52VT 
 5-20          20:40SS         22:47TE  1:13MS  3:25TS          5:34SR 10:10MR  2:11VT 
 5-21          20:40SS         22:49TE  1:40MS  3:22TS          5:33SR 11:23MR  1:41VT 
 5-22          20:42SS         22:52TE  2: 2MS  3:22TS          5:31SR          1:19VT 
 5-23  12:34MR 20:43SS         22:53TE  2:20MS  3:19TS          5:31SR          0:58VT 
 5-24  13:40MR 20:43SS         22:55TE  2:37MS  3:17TS          5:30SR          0:40VT 
 5-25  14:43MR 20:45SS         22:57TE  2:52MS  3:16TS          5:28SR          0:24VT 
 5-26  15:48MR 20:46SS         22:58TE  3: 7MS  3:16TS          5:28SR          0: 8VT 
 5-27  16:52MR 20:46SS         23: 0TE          3:13TS  3:25MS  5:28SR          0: 0VT 
 5-28  17:58MR 20:47SS         23: 1TE          3:13TS  3:45MS  5:26SR          0: 0VT 
 5-29  19: 4MR 20:49SS         23: 4TE          3:10TS  4: 9MS  5:25SR          0: 0VT 
 5-30  20:12MR 20:49SS         23: 4TE          3:10TS  4:39MS  5:25SR          0: 0VT 
 5-31          20:51SS 21:19MR 23: 7TE          3: 9TS  5:19MS  5:25SR          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.