The dark sky table shows the 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  12:13MR 17:58SS         19:37TE  4:56MS  5: 5TS          6:46SR          0: 9VT 
 3- 2  13:13MR 17:58SS         19:40TE          5: 4TS  5:37MS  6:43SR          0: 0VT 
 3- 3  14:21MR 18: 1SS         19:40TE          5: 1TS  6: 9MS  6:41SR          0: 0VT 
 3- 4  15:33MR 18: 1SS         19:42TE          5: 0TS  6:35MS  6:40SR          0: 0VT 
 3- 5  16:45MR 18: 2SS         19:43TE          4:58TS          6:39SR  6:58MS  0: 0VT 
 3- 6  18: 0MR 18: 4SS         19:45TE          4:56TS          6:37SR  7:19MS  0: 0VT 
 3- 7          18: 6SS 19:13MR 19:46TE          4:55TS          6:34SR  7:37MS  0: 0VT 
 3- 8          18: 7SS         19:47TE 20:30MR  4:52TS          6:33SR  7:58MS  0:42VT 
 3- 9          18: 8SS         19:49TE 21:46MR  4:50TS          6:31SR  8:21MS  1:57VT 
 3-10          18:10SS         19:51TE 23: 7MR  4:49TS          6:28SR  8:48MS  3:16VT 
 3-11          18:12SS         19:52TE  0:27MR  4:46TS          6:26SR  9:21MS  4:34VT 
 3-12          18:13SS         19:53TE  1:46MR  4:45TS          6:25SR 10: 4MS  5:52VT 
 3-13          18:13SS         19:55TE  2:57MR  4:43TS          6:24SR 11: 0MS  7: 1VT 
 3-14          18:16SS         19:55TE  3:57MR  4:40TS          6:22SR          8: 1VT 
 3-15  12: 7MS 18:16SS         19:58TE          4:39TS  4:43MR  6:19SR          8:40VT 
 3-16  13:22MS 18:17SS         19:58TE          4:37TS  5:19MR  6:18SR          8:38VT 
 3-17  16: 0MS 18:19SS         20: 1TE          4:34TS  5:46MR  6:16SR          8:33VT 
 3-18  16:34MS 18:21SS         20: 1TE          4:33TS  6:10MR  6:13SR          8:31VT 
 3-19  17:10MS 18:22SS         20: 4TE          4:31TS          6:11SR  6:28MR  8:26VT 
 3-20  18:21MS 18:22SS         20: 4TE          4:28TS          6:10SR  6:48MR  8:24VT 
 3-21          18:25SS 19:30MS 20: 7TE          4:26TS          6: 7SR  7: 4MR  8:19VT 
 3-22          18:25SS         20: 7TE 20:37MS  4:25TS          6: 7SR  7:24MR  7:47VT 
 3-23          18:27SS         20: 8TE 21:46MS  4:22TS          6: 4SR  7:45MR  6:36VT 
 3-24          18:28SS         20:10TE 22:52MS  4:20TS          6: 3SR  8: 8MR  5:28VT 
 3-25          18:30SS         20:12TE 23:58MS  4:19TS          6: 1SR  8:40MR  4:20VT 
 3-26          18:31SS         20:13TE  1: 2MS  4:16TS          5:58SR  9:17MR  3:13VT 
 3-27          18:32SS         20:15TE  2: 1MS  4:13TS          5:56SR 10: 3MR  2:12VT 
 3-28          18:34SS         20:16TE  2:52MS  4:11TS          5:55SR 10:58MR  1:19VT 
 3-29          18:34SS         20:17TE  3:34MS  4:10TS          5:52SR          0:35VT 
 3-30  12: 1MR 18:37SS         20:19TE          4: 7TS  4: 7MS  5:50SR          0: 0VT 
 3-31  13:10MR 18:37SS         20:22TE          4: 5TS  4:35MS  5:49SR          0: 0VT 

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.

© 1998-2003 David Haworth