March 2012 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          17:58SS         19:37TE  2:54MS  5: 5TS          6:46SR          2:11VT 
 3- 2  12: 4MR 17:58SS         19:40TE  3:37MS  5: 4TS          6:43SR          1:26VT 
 3- 3  13: 4MR 18: 1SS         19:40TE  4:16MS  5: 1TS          6:41SR          0:45VT 
 3- 4  14:11MR 18: 1SS         19:43TE  4:50MS  5: 0TS          6:40SR          0: 9VT 
 3- 5  15:23MR 18: 4SS         19:43TE          4:58TS  5:20MS  6:37SR          0: 0VT 
 3- 6  16:34MR 18: 4SS         19:45TE          4:55TS  5:49MS  6:37SR          0: 0VT 
 3- 7  17:51MR 18: 6SS         19:46TE          4:55TS  6:19MS  6:34SR          0: 0VT 
 3- 8          18: 7SS 19: 7MR 19:47TE          4:52TS          6:33SR  6:48MS  0: 0VT 
 3- 9          18: 8SS         19:49TE 20:25MR  4:50TS          6:31SR  7:19MS  0:36VT 
 3-10          18:10SS         19:51TE 21:43MR  4:49TS          6:28SR  7:55MS  1:52VT 
Pacific Daylight Saving Time (PDT) starts March 11, 2:00 am, The below times are PDT 
 3-11          19:12SS         20:52TE          5:46TS          7:26SR  9:37MS  3: 7VT 
 3-12          19:13SS         20:53TE  1:12MR  5:45TS          7:25SR 10:25MS  4:18VT 
 3-13          19:13SS         20:55TE  2:16MR  5:43TS          7:24SR 11:22MS  5:21VT 
 3-14          19:16SS         20:57TE  3:12MR  5:40TS          7:22SR          6:14VT 
 3-15  12:23MS 19:16SS         20:58TE  3:58MR  5:39TS          7:19SR          7: 0VT 
 3-16  13:31MS 19:17SS         20:58TE  4:37MR  5:37TS          7:18SR          7:38VT 
 3-17  14:37MS 19:19SS         21: 1TE  5: 9MR  5:34TS          7:16SR          8: 7VT 
 3-18  15:45MS 19:21SS         21: 1TE          5:33TS  5:37MR  7:13SR          8:31VT 
 3-19  16:50MS 19:22SS         21: 4TE          5:31TS  6: 1MR  7:11SR          8:26VT 
 3-20  17:55MS 19:23SS         21: 4TE          5:28TS  6:25MR  7:10SR          8:24VT 
 3-21  18:58MS 19:25SS         21: 7TE          5:26TS  6:49MR  7: 7SR          8:19VT 
 3-22          19:25SS 20: 1MS 21: 7TE          5:25TS          7: 5SR  7:13MR  8:17VT 
 3-23          19:28SS 21: 2MS 21:10TE          5:22TS          7: 4SR  7:39MR  8:12VT 
 3-24          19:28SS         21:10TE 22: 4MS  5:20TS          7: 3SR  8: 7MR  7:16VT 
 3-25          19:30SS         21:13TE 23: 4MS  5:18TS          7: 1SR  8:41MR  6:13VT 
 3-26          19:31SS         21:13TE  0: 2MS  5:16TS          6:58SR  9:18MR  5:14VT 
 3-27          19:32SS         21:16TE  0:57MS  5:13TS          6:56SR 10: 4MR  4:16VT 
 3-28          19:34SS         21:16TE  1:46MS  5:11TS          6:55SR 10:55MR  3:25VT 
 3-29          19:34SS         21:19TE  2:31MS  5:10TS          6:52SR 11:52MR  2:39VT 
 3-30          19:37SS         21:19TE  3:10MS  5: 7TS          6:50SR          1:57VT 
 3-31  12:53MR 19:37SS         21:22TE  3:46MS  5: 5TS          6:49SR          1:19VT 

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.