March 2011 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  15:11MS 17:57SS         19:37TE          5: 7TS  5:34MR  6:46SR          9:29VT 
 3- 2  16:16MS 17:58SS         19:38TE          5: 4TS  5:56MR  6:45SR          9:26VT 
 3- 3  17:19MS 18: 0SS         19:40TE          5: 3TS  6:18MR  6:43SR          9:22VT 
 3- 4          18: 1SS 18:21MS 19:40TE          5: 1TS  6:37MR  6:41SR          9:21VT 
 3- 5          18: 2SS 19:22MS 19:43TE          5: 0TS          6:40SR  6:58MR  9:16VT 
 3- 6          18: 4SS         19:43TE 20:22MS  4:58TS          6:37SR  7:19MR  8:35VT 
 3- 7          18: 4SS         19:46TE 21:25MS  4:55TS          6:35SR  7:43MR  7:30VT 
 3- 8          18: 7SS         19:46TE 22:28MS  4:54TS          6:34SR  8:12MR  6:25VT 
 3- 9          18: 7SS         19:47TE 23:31MS  4:52TS          6:31SR  8:45MR  5:20VT 
 3-10          18: 8SS         19:49TE  0:32MS  4:49TS          6:31SR  9:26MR  4:17VT 
 3-11          18:10SS         19:51TE  1:30MS  4:48TS          6:28SR 10:16MR  3:18VT 
 3-12          18:12SS         19:52TE  2:22MS  4:46TS          6:26SR 11:16MR  2:23VT 
Pacific Daylight Saving Time (PDT) starts March 13, 2:00 am, The below times are PDT 
 3-13  12:16MR 19:13SS         20:53TE  4: 7MS  5:43TS          7:25SR          1:35VT 
 3-14  13:22MR 19:15SS         20:55TE  4:48MS  5:41TS          7:22SR          0:53VT 
 3-15  14:36MR 19:16SS         20:57TE  5:22MS  5:40TS          7:20SR          0:18VT 
 3-16  15:53MR 19:16SS         20:58TE          5:39TS  5:52MS  7:19SR          0: 0VT 
 3-17  17:13MR 19:19SS         21: 0TE          5:35TS  6:19MS  7:16SR          0: 0VT 
 3-18  18:34MR 19:19SS         21: 1TE          5:34TS  6:48MS  7:16SR          0: 0VT 
 3-19          19:21SS 19:57MR 21: 2TE          5:31TS          7:13SR  7:16MS  0: 0VT 
 3-20          19:22SS         21: 4TE 21:19MR  5:30TS          7:11SR  7:48MS  0:15VT 
 3-21          19:23SS         21: 6TE 22:40MR  5:28TS          7:10SR  8:23MS  1:34VT 
 3-22          19:25SS         21: 7TE 23:57MR  5:25TS          7: 7SR  9: 7MS  2:49VT 
 3-23          19:27SS         21: 7TE  1: 7MR  5:24TS          7: 5SR  9:56MS  3:59VT 
 3-24          19:28SS         21:10TE  2: 7MR  5:22TS          7: 4SR 10:53MS  4:56VT 
 3-25          19:28SS         21:10TE  2:57MR  5:19TS          7: 1SR 11:55MS  5:46VT 
 3-26          19:30SS         21:13TE  3:37MR  5:18TS          7: 0SR          6:24VT 
 3-27  13: 0MS 19:31SS         21:13TE  4:10MR  5:16TS          6:58SR          6:57VT 
 3-28  14: 4MS 19:32SS         21:16TE  4:37MR  5:13TS          6:55SR          7:21VT 
 3-29  15: 8MS 19:34SS         21:16TE  5: 1MR  5:11TS          6:55SR          7:45VT 
 3-30  16:12MS 19:36SS         21:19TE          5:10TS  5:22MR  6:52SR          7:50VT 
 3-31  17:13MS 19:37SS         21:21TE          5: 7TS  5:43MR  6:50SR          7:45VT 

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.