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  15:46MR 17:57SS         19:37TE          5: 7TS  6:28MS  6:46SR          0: 0VT 
 3- 2  16:55MR 17:58SS         19:38TE          5: 4TS          6:45SR  6:45MS  0: 0VT 
 3- 3          18: 0SS 18: 1MR 19:40TE          5: 3TS          6:43SR  7: 1MS  0: 0VT 
 3- 4          18: 1SS 19: 7MR 19:40TE          5: 1TS          6:41SR  7:16MS  0: 0VT 
 3- 5          18: 1SS         19:43TE 20:10MR  5: 0TS          6:40SR  7:31MS  0:27VT 
 3- 6          18: 4SS         19:43TE 21:15MR  4:58TS          6:37SR  7:48MS  1:31VT 
 3- 7          18: 4SS         19:46TE 22:21MR  4:55TS          6:35SR  8: 7MS  2:34VT 
 3- 8          18: 7SS         19:46TE 23:28MR  4:54TS          6:34SR  8:30MS  3:41VT 
 3- 9          18: 7SS         19:47TE  0:36MR  4:52TS          6:33SR  9: 0MS  4:48VT 
 3-10          18: 8SS         19:49TE  1:42MR  4:49TS          6:31SR  9:38MS  5:52VT 
 3-11          18:10SS         19:51TE  2:43MR  4:48TS          6:28SR 10:30MS  6:52VT 
 3-12          18:12SS         19:52TE  3:37MR  4:46TS          6:26SR 11:33MS  7:44VT 
 3-13          18:13SS         19:53TE  4:20MR  4:45TS          6:25SR          8:27VT 
 3-14  12:46MS 18:15SS         19:55TE          4:43TS  4:55MR  6:22SR          8:47VT 
 3-15  14: 7MS 18:16SS         19:57TE          4:40TS  5:22MR  6:20SR          8:43VT 
 3-16  15:29MS 18:16SS         19:58TE          4:39TS  5:46MR  6:19SR          8:40VT 
 3-17  16:52MS 18:19SS         20: 0TE          4:37TS  6: 5MR  6:16SR          8:37VT 
 3-18  18:16MS 18:19SS         20: 1TE          4:34TS          6:16SR  6:26MR  8:33VT 
 3-19          18:21SS 19:38MS 20: 2TE          4:33TS          6:13SR  6:48MR  8:30VT 
 3-20          18:22SS         20: 4TE 21: 4MS  4:30TS          6:11SR  7:11MR  7:25VT 
 3-21          18:23SS         20: 6TE 22:31MS  4:28TS          6:10SR  7:41MR  5:56VT 
 3-22          18:25SS         20: 7TE 23:53MS  4:25TS          6: 7SR  8:19MR  4:31VT 
 3-23          18:27SS         20: 7TE  1:10MS  4:24TS          6: 5SR  9: 7MR  3:13VT 
 3-24          18:28SS         20:10TE  2:15MS  4:22TS          6: 4SR 10: 7MR  2: 7VT 
 3-25          18:28SS         20:10TE  3: 5MS  4:19TS          6: 1SR 11:16MR  1:13VT 
 3-26          18:30SS         20:13TE  3:43MS  4:18TS          6: 0SR          0:34VT 
 3-27  12:26MR 18:31SS         20:13TE  4:11MS  4:16TS          5:58SR          0: 4VT 
 3-28  13:37MR 18:32SS         20:16TE          4:13TS  4:34MS  5:56SR          0: 0VT 
 3-29  14:46MR 18:34SS         20:16TE          4:11TS  4:52MS  5:55SR          0: 0VT 
 3-30  15:52MR 18:36SS         20:19TE          4:10TS  5: 7MS  5:52SR          0: 0VT 
 3-31  16:58MR 18:37SS         20:19TE          4: 7TS  5:24MS  5:50SR          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