May 2006 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          20:16SS         22:13TE  1:23MS  4: 1TS          5:56SR  9:19MR  2:37VT 
 5- 2          20:17SS         22:15TE  2: 7MS  3:58TS          5:55SR 10:26MR  1:50VT 
 5- 3          20:19SS         22:16TE  2:39MS  3:55TS          5:54SR 11:36MR  1:16VT 
 5- 4          20:21SS         22:19TE  3: 4MS  3:54TS          5:52SR          0:49VT 
 5- 5  12:43MR 20:22SS         22:21TE  3:24MS  3:52TS          5:50SR          0:28VT 
 5- 6  13:49MR 20:22SS         22:22TE  3:40MS  3:49TS          5:49SR          0: 9VT 
 5- 7  14:53MR 20:25SS         22:25TE          3:47TS  3:55MS  5:48SR          0: 0VT 
 5- 8  15:58MR 20:25SS         22:25TE          3:46TS  4:10MS  5:46SR          0: 0VT 
 5- 9  17: 2MR 20:27SS         22:28TE          3:43TS  4:26MS  5:46SR          0: 0VT 
 5-10  18:10MR 20:28SS         22:30TE          3:43TS  4:43MS  5:43SR          0: 0VT 
 5-11  19:19MR 20:28SS         22:31TE          3:40TS  5: 4MS  5:43SR          0: 0VT 
 5-12          20:31SS 20:31MR 22:34TE          3:39TS  5:31MS  5:41SR          0: 0VT 
 5-13          20:31SS 21:45MR 22:36TE          3:37TS          5:40SR  6: 4MS  0: 0VT 
 5-14          20:32SS         22:37TE 22:57MR  3:34TS          5:40SR  6:50MS  0:19VT 
 5-15          20:34SS         22:40TE  0: 1MR  3:32TS          5:37SR  7:49MS  1:20VT 
 5-16          20:34SS         22:40TE  0:53MR  3:31TS          5:37SR  9: 0MS  2:12VT 
 5-17          20:37SS         22:43TE  1:34MR  3:30TS          5:35SR 10:19MS  2:50VT 
 5-18          20:37SS         22:45TE  2: 4MR  3:28TS          5:34SR 11:40MS  3:19VT 
 5-19          20:38SS         22:46TE  2:30MR  3:25TS          5:34SR          3:43VT 
 5-20  13: 1MS 20:40SS         22:49TE  2:50MR  3:24TS          5:33SR          4: 1VT 
 5-21  14:19MS 20:40SS         22:51TE  3:10MR  3:22TS          5:31SR          4:18VT 
 5-22  17: 0MS 20:42SS         22:52TE          3:20TS  3:28MR  5:31SR          4:28VT 
 5-23  17:37MS 20:43SS         22:53TE          3:19TS  3:49MR  5:31SR          4:26VT 
 5-24  18:16MS 20:43SS         22:55TE          3:17TS  4:13MR  5:30SR          4:22VT 
 5-25  19:37MS 20:45SS         22:58TE          3:16TS  4:41MR  5:28SR          4:18VT 
 5-26          20:46SS 20:55MS 22:58TE          3:15TS  5:19MR  5:28SR          4:16VT 
 5-27          20:46SS 22: 8MS 23: 1TE          3:13TS          5:26SR  6: 5MR  4:12VT 
 5-28          20:47SS         23: 1TE 23:10MS  3:12TS          5:26SR  7: 4MR  4: 1VT 
 5-29          20:49SS         23: 4TE          3:10TS          5:25SR  8:10MR  3:10VT 
 5-30          20:49SS         23: 6TE  0:37MS  3:10TS          5:25SR  9:18MR  2:33VT 
 5-31          20:51SS         23: 7TE  1: 4MS  3: 9TS          5:25SR 10:28MR  2: 4VT 

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.