April 2005 Dark Sky Observing Time

The dark sky table shows the Pacific Daylight Saving Time (PDT) times and Pacific Standard Time (PST) 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

 4- 1          18:38SS         20:22TE  2:58MR  4: 4TS          5:48SR 11: 6MS  6:35VT 
 4- 2          18:40SS         20:23TE  3:42MR  4: 1TS          5:46SR          7:18VT 
Pacific Daylight Saving Time (PDT) starts April 3, 2:00 am, The below times are PDT 
 4- 3  13:25MS 19:40SS         21:25TE          5: 0TS  5:13MR  6:43SR          7:34VT 
 4- 4  14:48MS 19:43SS         21:27TE          4:58TS  5:40MR  6:41SR          7:30VT 
 4- 5  16:10MS 19:43SS         21:28TE          4:55TS  6: 1MR  6:40SR          7:27VT 
 4- 6  17:28MS 19:45SS         21:31TE          4:54TS  6:19MR  6:39SR          7:22VT 
 4- 7  18:45MS 19:46SS         21:31TE          4:50TS          6:37SR  6:39MR  7:19VT 
 4- 8          19:47SS 20: 1MS 21:34TE          4:49TS          6:34SR  6:58MR  7:14VT 
 4- 9          19:49SS 21:16MS 21:34TE          4:46TS          6:33SR  7:19MR  7:12VT 
 4-10          19:49SS         21:37TE 22:31MS  4:45TS          6:31SR  7:45MR  6:13VT 
 4-11          19:52SS         21:38TE 23:43MS  4:43TS          6:30SR  8:15MR  4:59VT 
 4-12          19:52SS         21:40TE  0:51MS  4:40TS          6:28SR  8:55MR  3:49VT 
 4-13          19:53SS         21:42TE  1:52MS  4:37TS          6:25SR  9:42MR  2:45VT 
 4-14          19:55SS         21:43TE  2:43MS  4:35TS          6:24SR 10:40MR  1:52VT 
 4-15          19:57SS         21:45TE  3:22MS  4:34TS          6:22SR 11:43MR  1:11VT 
 4-16          19:58SS         21:46TE  3:55MS  4:31TS          6:20SR          0:36VT 
 4-17  12:49MR 19:58SS         21:49TE  4:19MS  4:30TS          6:19SR          0:10VT 
 4-18  13:55MR 20: 1SS         21:51TE          4:28TS  4:40MS  6:16SR          0: 0VT 
 4-19  15: 4MR 20: 1SS         21:52TE          4:25TS  4:58MS  6:16SR          0: 0VT 
 4-20  16:12MR 20: 2SS         21:53TE          4:22TS  5:16MS  6:13SR          0: 0VT 
 4-21  17:21MR 20: 4SS         21:55TE          4:20TS  5:33MS  6:11SR          0: 0VT 
 4-22  18:31MR 20: 6SS         21:57TE          4:19TS  5:49MS  6:10SR          0: 0VT 
 4-23  19:45MR 20: 7SS         21:58TE          4:16TS          6: 9SR  6:10MS  0: 0VT 
 4-24          20: 7SS 21: 1MR 22: 1TE          4:15TS          6: 7SR  6:34MS  0: 0VT 
 4-25          20:10SS         22: 2TE 22:22MR  4:13TS          6: 5SR  7: 7MS  0:19VT 
 4-26          20:10SS         22: 4TE 23:40MR  4:10TS          6: 4SR  7:49MS  1:36VT 
 4-27          20:12SS         22: 6TE  0:54MR  4: 7TS          6: 3SR  8:45MS  2:47VT 
 4-28          20:13SS         22: 7TE  1:55MR  4: 5TS          6: 1SR  9:56MS  3:47VT 
 4-29          20:15SS         22:10TE  2:43MR  4: 4TS          5:58SR 11:13MS  4:32VT 
 4-30          20:16SS         22:12TE  3:17MR  4: 1TS          5:58SR          5: 5VT 

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.