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          17:58SS         19:37TE  0:30MR  5: 5TS          6:46SR  9:30MS  4:52VT 
 3- 2          17:58SS         19:38TE  1:47MR  5: 4TS          6:43SR 10: 7MS  6: 9VT 
 3- 3          18: 0SS         19:40TE  3: 2MR  5: 3TS          6:43SR 10:58MS  7:22VT 
 3- 4          18: 1SS         19:42TE  4: 7MR  5: 1TS          6:40SR          8:25VT 
 3- 5  12: 4MS 18: 2SS         19:43TE          4:58TS  5: 1MR  6:39SR          9:15VT 
 3- 6  13:21MS 18: 4SS         19:45TE          4:56TS  5:41MR  6:37SR          9:11VT 
 3- 7  14:45MS 18: 6SS         19:46TE          4:55TS  6:13MR  6:34SR          9: 8VT 
 3- 8  16:10MS 18: 7SS         19:47TE          4:52TS          6:33SR  6:37MR  9: 5VT 
 3- 9  17:32MS 18: 8SS         19:49TE          4:50TS          6:31SR  6:58MR  9: 1VT 
 3-10          18:10SS 18:52MS 19:49TE          4:49TS          6:30SR  7:16MR  8:59VT 
 3-11          18:10SS         19:52TE 20:10MS  4:46TS          6:28SR  7:35MR  8:36VT 
 3-12          18:13SS         19:52TE 21:25MS  4:46TS          6:25SR  7:55MR  7:20VT 
 3-13          18:13SS         19:55TE 22:38MS  4:43TS          6:24SR  8:18MR  6: 5VT 
 3-14          18:15SS         19:55TE 23:52MS  4:41TS          6:22SR  8:47MR  4:49VT 
 3-15          18:16SS         19:58TE  1: 1MS  4:40TS          6:19SR  9:21MR  3:38VT 
 3-16          18:17SS         19:58TE  2: 5MS  4:37TS          6:18SR 10: 3MR  2:31VT 
 3-17          18:19SS         20: 0TE  3: 1MS  4:35TS          6:16SR 10:53MR  1:34VT 
 3-18          18:21SS         20: 1TE  3:47MS  4:34TS          6:15SR 11:52MR  0:46VT 
 3-19          18:22SS         20: 2TE  4:24MS  4:31TS          6:13SR          0: 7VT 
 3-20  12:56MR 18:22SS         20: 4TE          4:28TS  4:52MS  6:10SR          0: 0VT 
 3-21  14: 4MR 18:25SS         20: 6TE          4:26TS  5:16MS  6: 9SR          0: 0VT 
 3-22  15:13MR 18:25SS         20: 7TE          4:25TS  5:37MS  6: 7SR          0: 0VT 
 3-23  16:21MR 18:27SS         20: 8TE          4:22TS  5:54MS  6: 4SR          0: 0VT 
 3-24  17:28MR 18:28SS         20:10TE          4:20TS          6: 3SR  6:10MS  0: 0VT 
 3-25          18:30SS 18:37MR 20:12TE          4:19TS          6: 1SR  6:28MS  0: 0VT 
 3-26          18:31SS 19:49MR 20:13TE          4:16TS          5:58SR  6:46MS  0: 0VT 
 3-27          18:31SS         20:15TE 21: 2MR  4:15TS          5:58SR  7: 7MS  0:47VT 
 3-28          18:34SS         20:16TE 22:19MR  4:13TS          5:55SR  7:34MS  2: 2VT 
 3-29          18:34SS         20:17TE 23:37MR  4:10TS          5:54SR  8: 7MS  3:19VT 
 3-30          18:36SS         20:19TE  0:54MR  4: 9TS          5:52SR  8:53MS  4:34VT 
 3-31          18:37SS         20:21TE  2: 1MR  4: 5TS          5:49SR  9:53MS  5:40VT 

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