March 2010 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

 3- 1          17:57SS         19:37TE 19:53MR  5: 7TS          6:46SR  7:19MS  0:16VT 
 3- 2          17:58SS         19:38TE 21:13MR  5: 4TS          6:45SR  7:46MS  1:34VT 
 3- 3          18: 0SS         19:40TE 22:31MR  5: 3TS          6:43SR  8:15MS  2:51VT 
 3- 4          18: 1SS         19:42TE 23:45MR  5: 1TS          6:40SR  8:51MS  4: 2VT 
 3- 5          18: 2SS         19:43TE  0:54MR  4:58TS          6:39SR  9:32MS  5:10VT 
 3- 6          18: 4SS         19:45TE  1:55MR  4:56TS          6:37SR 10:19MS  6:10VT 
 3- 7          18: 6SS         19:46TE  2:47MR  4:55TS          6:35SR 11:15MS  7: 1VT 
 3- 8          18: 7SS         19:46TE  3:31MR  4:54TS          6:34SR          7:44VT 
 3- 9  12:15MS 18: 7SS         19:49TE  4: 5MR  4:52TS          6:31SR          8:16VT 
 3-10  13:18MS 18:10SS         19:49TE  4:34MR  4:49TS          6:30SR          8:45VT 
 3-11  14:22MS 18:10SS         19:52TE          4:48TS  4:58MR  6:28SR          8:55VT 
 3-12  15:25MS 18:12SS         19:52TE          4:46TS  5:19MR  6:25SR          8:53VT 
 3-13  16:28MS 18:13SS         19:53TE          4:43TS  5:39MR  6:25SR          8:50VT 
Pacific Daylight Saving Time (PDT) starts March 14, 2:00 am, The below times are PDT 
 3-14  18:31MS 19:15SS         20:55TE          5:41TS  6:58MR  7:22SR          8:46VT 
 3-15          19:16SS 19:34MS 20:57TE          5:40TS  7:16MR  7:20SR          8:42VT 
 3-16          19:17SS 20:40MS 20:58TE          5:37TS          7:19SR  7:37MR  8:39VT 
 3-17          19:19SS         21: 0TE 21:46MS  5:35TS          7:16SR  8: 0MR  7:49VT 
 3-18          19:19SS         21: 1TE 22:55MS  5:34TS          7:15SR  8:30MR  6:38VT 
 3-19          19:22SS         21: 2TE  0: 4MS  5:31TS          7:13SR  9: 4MR  5:27VT 
 3-20          19:22SS         21: 4TE  1:10MS  5:30TS          7:10SR  9:48MR  4:19VT 
 3-21          19:23SS         21: 6TE  2:13MS  5:28TS          7: 9SR 10:43MR  3:14VT 
 3-22          19:25SS         21: 7TE  3: 7MS  5:25TS          7: 7SR 11:49MR  2:17VT 
 3-23          19:27SS         21: 8TE  3:54MS  5:24TS          7: 5SR          1:30VT 
 3-24  13: 4MR 19:28SS         21:10TE  4:31MS  5:22TS          7: 4SR          0:50VT 
 3-25  14:22MR 19:28SS         21:12TE  5: 3MS  5:19TS          7: 1SR          0:16VT 
 3-26  15:43MR 19:31SS         21:13TE          5:16TS  5:30MS  7: 0SR          0: 0VT 
 3-27  17: 4MR 19:31SS         21:15TE          5:15TS  5:55MS  6:58SR          0: 0VT 
 3-28  18:23MR 19:32SS         21:16TE          5:13TS  6:19MS  6:55SR          0: 0VT 
 3-29          19:34SS 19:43MR 21:17TE          5:10TS  6:45MS  6:54SR          0: 0VT 
 3-30          19:36SS 21: 1MR 21:19TE          5: 9TS          6:52SR  7:13MS  0: 0VT 
 3-31          19:37SS         21:21TE 22:19MR  5: 7TS          6:49SR  7:46MS  0:58VT 

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.