May 2005 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  12:36MS 20:16SS         22:13TE  3:45MR  4: 0TS          5:55SR          5:31VT 
 5- 2  13:55MS 20:19SS         22:16TE          3:58TS  4: 7MR  5:55SR          5:41VT 
 5- 3  15:13MS 20:19SS         22:17TE          3:55TS  4:25MR  5:54SR          5:38VT 
 5- 4  16:28MS 20:21SS         22:19TE          3:54TS  4:43MR  5:52SR          5:34VT 
 5- 5  17:43MS 20:22SS         22:21TE          3:52TS  5: 1MR  5:50SR          5:30VT 
 5- 6  18:57MS 20:23SS         22:22TE          3:49TS  5:22MR  5:49SR          5:27VT 
 5- 7  20:10MS 20:25SS         22:25TE          3:47TS  5:46MR  5:48SR          5:22VT 
 5- 8          20:25SS 21:23MS 22:27TE          3:46TS          5:46SR  6:13MR  5:18VT 
 5- 9          20:27SS         22:28TE 22:34MS  3:43TS          5:45SR  6:49MR  5: 9VT 
 5-10          20:28SS         22:31TE 23:38MS  3:42TS          5:43SR  7:34MR  4: 3VT 
 5-11          20:30SS         22:32TE  0:35MS  3:40TS          5:43SR  8:27MR  3: 5VT 
 5-12          20:31SS         22:34TE  1:19MS  3:37TS          5:41SR  9:29MR  2:18VT 
 5-13          20:31SS         22:36TE  1:54MS  3:35TS          5:40SR 10:34MR  1:41VT 
 5-14          20:32SS         22:37TE  2:22MS  3:34TS          5:39SR 11:40MR  1:12VT 
 5-15          20:34SS         22:40TE  2:45MS  3:32TS          5:37SR          0:47VT 
 5-16  12:48MR 20:36SS         22:42TE  3: 4MS  3:31TS          5:37SR          0:26VT 
 5-17  13:55MR 20:37SS         22:43TE  3:20MS  3:28TS          5:35SR          0: 7VT 
 5-18  15: 1MR 20:37SS         22:46TE          3:27TS  3:37MS  5:34SR          0: 0VT 
 5-19  16:10MR 20:38SS         22:46TE          3:25TS  3:54MS  5:34SR          0: 0VT 
 5-20  17:22MR 20:40SS         22:49TE          3:24TS  4:13MS  5:33SR          0: 0VT 
 5-21  18:37MR 20:40SS         22:51TE          3:22TS  4:34MS  5:31SR          0: 0VT 
 5-22  19:58MR 20:42SS         22:52TE          3:20TS  5: 4MS  5:31SR          0: 0VT 
 5-23          20:43SS 21:19MR 22:53TE          3:19TS          5:30SR  5:43MS  0: 0VT 
 5-24          20:43SS 22:37MR 22:55TE          3:17TS          5:30SR  6:34MS  0: 0VT 
 5-25          20:45SS         22:58TE 23:46MR  3:16TS          5:28SR  7:41MS  0:48VT 
 5-26          20:46SS         23: 0TE  0:39MR  3:15TS          5:28SR  9: 0MS  1:39VT 
 5-27          20:46SS         23: 1TE  1:19MR  3:13TS          5:26SR 10:22MS  2:17VT 
 5-28          20:47SS         23: 2TE  1:49MR  3:12TS          5:26SR 11:45MS  2:46VT 
 5-29          20:49SS         23: 4TE  2:12MR  3:10TS          5:25SR          3: 7VT 
 5-30  13: 4MS 20:49SS         23: 6TE  2:31MR  3:10TS          5:25SR          3:25VT 
 5-31  14:19MS 20:51SS         23: 7TE  2:49MR  3: 7TS          5:25SR          3:42VT 

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.