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DARK SKY INDEX - New

2013 Dark Sky Observing Time PST

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.

DARKSKY- Dave Heider 3/92   Site-Portland
Portland, Oregon, U.S.A. (Longitude: West 122.68 degrees & Latitude: North 45.52 degrees)
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
 1- 1          16:37SS         18:25TE 21:30MR  6: 4TS          7:50SR 10:19MS  3: 4VT 
 1- 2          16:38SS         18:25TE 22:34MR  6: 4TS          7:50SR 10:45MS  4: 8VT 
 1- 3          16:40SS         18:25TE 23:43MR  6: 4TS          7:49SR 11:13MS  5:17VT 
 1- 4          16:40SS         18:27TE  0:52MR  6: 4TS          7:49SR 11:43MS  6:24VT 
 1- 5          16:42SS         18:28TE  2: 4MR  6: 4TS          7:49SR          7:35VT 
 1- 6  12:19MS 16:43SS         18:28TE  3:16MR  6: 4TS          7:49SR          8:47VT 
 1- 7  13: 1MS 16:43SS         18:30TE  4:28MR  6: 3TS          7:49SR          9:58VT 
 1- 8  13:52MS 16:45SS         18:31TE  5:34MR  6: 3TS          7:49SR         11: 3VT 
 1- 9  14:52MS 16:46SS         18:31TE          6: 3TS  6:34MR  7:49SR         11:31VT 
 1-10  16: 2MS 16:46SS         18:32TE          6: 3TS  7:24MR  7:49SR         11:30VT 
 1-11          16:49SS 17:16MS 18:34TE          6: 1TS          7:48SR  8: 6MR 11:27VT 
 1-12          16:49SS 18:32MS 18:36TE          6: 1TS          7:48SR  8:41MR 11:25VT 
 1-13          16:51SS         18:37TE 19:46MS  6: 1TS          7:46SR  9:11MR 10:15VT 
 1-14          16:52SS         18:37TE 20:58MS  6: 1TS          7:46SR  9:40MR  9: 2VT 
 1-15          16:53SS         18:38TE 22: 7MS  6: 1TS          7:46SR 10: 7MR  7:53VT 
 1-16          16:55SS         18:40TE 23:13MS  6: 0TS          7:45SR 10:33MR  6:46VT 
 1-17          16:55SS         18:40TE  0:16MS  6: 0TS          7:45SR 11: 1MR  5:43VT 
 1-18          16:58SS         18:42TE  1:19MS  5:58TS          7:43SR 11:31MR  4:39VT 
 1-19          16:58SS         18:43TE  2:19MS  5:58TS          7:43SR          3:39VT 
 1-20  12: 6MR 17: 0SS         18:45TE  3:16MS  5:58TS          7:41SR          2:42VT 
 1-21  12:43MR 17: 1SS         18:46TE  4:10MS  5:56TS          7:40SR          1:46VT 
 1-22  13:28MR 17: 2SS         18:46TE  4:58MS  5:55TS          7:40SR          0:56VT 
 1-23  14:18MR 17: 4SS         18:47TE  5:43MS  5:55TS          7:40SR          0:12VT 
 1-24  15:11MR 17: 6SS         18:49TE          5:55TS  6:22MS  7:39SR          0: 0VT 
 1-25  16:10MR 17: 7SS         18:51TE          5:54TS  6:58MS  7:37SR          0: 0VT 
 1-26          17: 8SS 17:13MR 18:52TE          5:52TS  7:28MS  7:37SR          0: 0VT 
 1-27          17:10SS 18:16MR 18:53TE          5:52TS          7:34SR  7:56MS  0: 0VT 
 1-28          17:12SS         18:55TE 19:21MR  5:50TS          7:34SR  8:23MS  0:25VT 
 1-29          17:13SS         18:55TE 20:28MR  5:49TS          7:33SR  8:51MS  1:32VT 
 1-30          17:13SS         18:57TE 21:34MR  5:49TS          7:31SR  9:18MS  2:37VT 
 1-31          17:16SS         18:58TE 22:43MR  5:48TS          7:31SR  9:48MS  3:44VT 

Portland, Oregon, U.S.A. (Longitude: West 122.68 degrees & Latitude: North 45.52 degrees)
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
 2- 1          17:16SS         19: 0TE 23:52MR  5:46TS          7:30SR 10:21MS  4:52VT 
 2- 2          17:19SS         19: 1TE  1: 2MR  5:46TS          7:28SR 10:58MS  6: 1VT 
 2- 3          17:19SS         19: 2TE  2:13MR  5:45TS          7:26SR 11:45MS  7:10VT 
 2- 4          17:22SS         19: 4TE  3:19MR  5:43TS          7:25SR          8:14VT 
 2- 5  12:40MS 17:22SS         19: 4TE  4:19MR  5:43TS          7:25SR          9:15VT 
 2- 6  13:43MS 17:25SS         19: 7TE  5:11MR  5:40TS          7:22SR         10: 4VT 
 2- 7  14:52MS 17:25SS         19: 7TE          5:40TS  5:56MR  7:22SR         10:32VT 
 2- 8  16: 6MS 17:28SS         19: 8TE          5:39TS  6:35MR  7:19SR         10:30VT 
 2- 9  17:21MS 17:28SS         19:10TE          5:37TS  7: 9MR  7:19SR         10:27VT 
 2-10          17:31SS 18:34MS 19:12TE          5:35TS          7:18SR  7:39MR 10:23VT 
 2-11          17:31SS         19:13TE 19:45MS  5:34TS          7:16SR  8: 7MR  9:49VT 
 2-12          17:32SS         19:15TE 20:52MS  5:33TS          7:15SR  8:33MR  8:40VT 
 2-13          17:34SS         19:16TE 22: 0MS  5:31TS          7:13SR  9: 2MR  7:31VT 
 2-14          17:36SS         19:17TE 23: 4MS  5:31TS          7:10SR  9:32MR  6:26VT 
 2-15          17:37SS         19:19TE  0: 6MS  5:28TS          7:10SR 10: 4MR  5:22VT 
 2-16          17:38SS         19:19TE  1: 4MS  5:28TS          7: 7SR 10:41MR  4:23VT 
 2-17          17:40SS         19:22TE  2: 0MS  5:25TS          7: 7SR 11:23MR  3:25VT 
 2-18          17:42SS         19:22TE  2:50MS  5:25TS          7: 4SR          2:34VT 
 2-19  12:10MR 17:43SS         19:23TE  3:37MS  5:22TS          7: 3SR          1:45VT 
 2-20  13: 3MR 17:45SS         19:25TE  4:19MS  5:20TS          7: 1SR          1: 1VT 
 2-21  14: 0MR 17:46SS         19:27TE  4:55MS  5:19TS          7: 0SR          0:24VT 
 2-22  15: 0MR 17:47SS         19:28TE          5:18TS  5:28MS  6:58SR          0: 0VT 
 2-23  16: 2MR 17:49SS         19:30TE          5:16TS  5:58MS  6:56SR          0: 0VT 
 2-24  17: 7MR 17:51SS         19:31TE          5:15TS  6:26MS  6:55SR          0: 0VT 
 2-25          17:52SS 18:15MR 19:31TE          5:13TS          6:52SR  6:54MS  0: 0VT 
 2-26          17:53SS 19:22MR 19:34TE          5:10TS          6:50SR  7:22MS  0: 0VT 
 2-27          17:55SS         19:34TE 20:32MR  5:10TS          6:49SR  7:52MS  0:58VT 
 2-28          17:55SS         19:37TE 21:43MR  5: 7TS          6:48SR  8:23MS  2: 5VT 

Portland, Oregon, U.S.A. (Longitude: West 122.68 degrees & Latitude: North 45.52 degrees)
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 22:53MR  5: 5TS          6:46SR  9: 0MS  3:16VT 
 3- 2          17:58SS         19:38TE  0: 4MR  5: 4TS          6:43SR  9:45MS  4:25VT 
 3- 3          18: 0SS         19:40TE  1:10MR  5: 1TS          6:43SR 10:36MS  5:30VT 
 3- 4          18: 1SS         19:42TE  2:12MR  5: 1TS          6:40SR 11:34MS  6:29VT 
 3- 5          18: 2SS         19:43TE  3: 5MR  4:58TS          6:39SR          7:22VT 
 3- 6  12:40MS 18: 4SS         19:45TE  3:52MR  4:56TS          6:37SR          8: 7VT 
 3- 7  13:49MS 18: 6SS         19:46TE  4:31MR  4:55TS          6:34SR          8:45VT 
 3- 8  15: 1MS 18: 7SS         19:47TE          4:52TS  5: 7MR  6:33SR          9: 5VT 
 3- 9  16:13MS 18: 8SS         19:49TE          4:50TS  5:37MR  6:31SR          9: 1VT 
 3-10  17:23MS 18:10SS         19:51TE          4:49TS  6: 5MR  6:30SR          8:58VT 
 3-11          18:10SS 18:32MS 19:52TE          4:46TS          6:28SR  6:34MR  8:54VT 
 3-12          18:13SS 19:40MS 19:52TE          4:45TS          6:25SR  7: 1MR  8:52VT 
 3-13          18:13SS         19:55TE 20:46MS  4:43TS          6:24SR  7:31MR  7:56VT 
 3-14          18:15SS         19:55TE 21:49MS  4:40TS          6:22SR  8: 3MR  6:51VT 
 3-15          18:16SS         19:58TE 22:51MS  4:39TS          6:19SR  8:40MR  5:47VT 
 3-16          18:17SS         19:58TE 23:49MS  4:37TS          6:18SR  9:19MR  4:47VT 
 3-17          18:19SS         20: 0TE  0:42MS  4:34TS          6:16SR 10: 4MR  3:52VT 
 3-18          18:21SS         20: 1TE  1:30MS  4:33TS          6:15SR 10:53MR  3: 3VT 
 3-19          18:22SS         20: 2TE  2:13MS  4:31TS          6:13SR 11:48MR  2:17VT 
 3-20          18:22SS         20: 4TE  2:52MS  4:28TS          6:10SR          1:36VT 
 3-21  12:46MR 18:25SS         20: 6TE  3:25MS  4:26TS          6: 9SR          1: 1VT 
 3-22  13:48MR 18:25SS         20: 7TE  3:57MS  4:25TS          6: 7SR          0:28VT 
 3-23  16: 1MR 18:27SS         20: 8TE          4:22TS  4:25MS  6: 4SR          0: 0VT 
 3-24  16:32MR 18:28SS         20:10TE          4:20TS  4:54MS  6: 3SR          0: 0VT 
 3-25  17: 4MR 18:30SS         20:12TE          4:19TS  5:22MS  6: 1SR          0: 0VT 
 3-26  18:15MR 18:31SS         20:13TE          4:16TS  5:50MS  5:58SR          0: 0VT 
 3-27          18:31SS 19:27MR 20:15TE          4:15TS          5:56SR  6:24MS  0: 0VT 
 3-28          18:34SS         20:16TE 20:38MR  4:13TS          5:55SR  7: 0MS  0:22VT 
 3-29          18:34SS         20:17TE 21:52MR  4:10TS          5:54SR  7:43MS  1:34VT 
 3-30          18:36SS         20:19TE 23: 1MR  4: 7TS          5:52SR  8:33MS  2:42VT 
 3-31          18:37SS         20:21TE  0: 6MR  4: 5TS          5:49SR  9:30MS  3:44VT 


Portland, Oregon, U.S.A. (Longitude: West 122.68 degrees & Latitude: North 45.52 degrees)
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
11- 1  15:58MS 16:57SS         18:37TE          5:10TS  5:54MR  6:52SR         10:32VT 
11- 2  16:31MS 16:55SS         18:37TE          5:10TS          6:52SR  7: 4MR 10:33VT 
11- 3          16:53SS 17:12MS 18:36TE          5:11TS          6:55SR  8:15MR 10:35VT 
11- 4          16:52SS 17:58MS 18:34TE          5:13TS          6:55SR  9:22MR 10:39VT 
11- 5          16:51SS         18:32TE 18:55MS  5:15TS          6:56SR 10:22MR 10:19VT 
11- 6          16:49SS         18:31TE 19:57MS  5:16TS          6:58SR 11:15MR  9:18VT 
11- 7          16:49SS         18:31TE 21: 4MS  5:18TS          7: 0SR          8:13VT 
11- 8  12: 0MR 16:46SS         18:30TE 22:16MS  5:19TS          7: 1SR          7: 2VT 
11- 9  12:38MR 16:46SS         18:28TE 23:28MS  5:19TS          7: 3SR          5:51VT 
11-10  13:11MR 16:45SS         18:28TE  0:38MS  5:20TS          7: 4SR          4:43VT 
11-11  13:43MR 16:43SS         18:27TE  1:46MS  5:22TS          7: 5SR          3:36VT 
11-12  14:13MR 16:43SS         18:25TE  2:55MS  5:24TS          7: 7SR          2:28VT 
11-13  14:41MR 16:42SS         18:25TE  4: 1MS  5:25TS          7: 9SR          1:23VT 
11-14  15:11MR 16:40SS         18:23TE  5: 7MS  5:25TS          7:10SR          0:18VT 
11-15  15:45MR 16:38SS         18:22TE          5:26TS  6:10MS  7:10SR          0: 0VT 
11-16  16:19MR 16:37SS         18:22TE          5:28TS  7:11MS  7:13SR          0: 0VT 
11-17          16:37SS 16:58MR 18:21TE          5:30TS          7:13SR  8: 7MS  0: 0VT 
11-18          16:37SS 17:43MR 18:21TE          5:31TS          7:15SR  9: 0MS  0: 0VT 
11-19          16:36SS         18:19TE 18:31MR  5:31TS          7:16SR  9:45MS  0:11VT 
11-20          16:34SS         18:19TE 19:22MR  5:33TS          7:18SR 10:26MS  1: 3VT 
11-21          16:34SS         18:19TE 20:17MR  5:34TS          7:19SR 11: 3MS  1:58VT 
11-22          16:32SS         18:17TE 21:15MR  5:35TS          7:20SR 11:34MS  2:57VT 
11-23          16:31SS         18:16TE 22:13MR  5:37TS          7:22SR          3:56VT 
11-24  12: 4MS 16:31SS         18:16TE 23:13MR  5:37TS          7:22SR          4:56VT 
11-25  12:31MS 16:31SS         18:16TE  0:15MR  5:39TS          7:24SR          5:58VT 
11-26  12:56MS 16:31SS         18:16TE  1:17MR  5:40TS          7:25SR          7: 1VT 
11-27  13:23MS 16:30SS         18:15TE  2:22MR  5:40TS          7:26SR          8: 7VT 
11-28  13:52MS 16:28SS         18:15TE  3:30MR  5:41TS          7:28SR          9:15VT 
11-29  14:25MS 16:28SS         18:15TE  4:40MR  5:43TS          7:28SR         10:25VT 
11-30  15: 1MS 16:28SS         18:13TE          5:43TS  5:50MR  7:31SR         11:30VT 

Portland, Oregon, U.S.A. (Longitude: West 122.68 degrees & Latitude: North 45.52 degrees)
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
12- 1  15:49MS 16:28SS         18:13TE          5:45TS  7: 1MR  7:31SR         11:31VT 
12- 2          16:28SS 16:37MS 18:13TE          5:46TS          7:33SR  8: 7MR 11:32VT 
12- 3          16:27SS 17:38MS 18:13TE          5:46TS          7:34SR  9: 4MR 11:33VT 
12- 4          16:27SS         18:13TE 18:47MS  5:48TS          7:34SR  9:56MR 11: 0VT 
12- 5          16:27SS         18:13TE 20: 1MS  5:49TS          7:35SR 10:37MR  9:47VT 
12- 6          16:27SS         18:13TE 21:15MS  5:49TS          7:37SR 11:15MR  8:34VT 
12- 7          16:27SS         18:13TE 22:28MS  5:50TS          7:37SR 11:46MR  7:22VT 
12- 8          16:27SS         18:13TE 23:38MS  5:52TS          7:39SR          6:13VT 
12- 9  12:16MR 16:25SS         18:13TE  0:47MS  5:52TS          7:40SR          5: 5VT 
12-10  12:46MR 16:27SS         18:13TE  1:54MS  5:54TS          7:40SR          4: 0VT 
12-11  13:16MR 16:27SS         18:13TE  2:58MS  5:54TS          7:41SR          2:55VT 
12-12  13:46MR 16:27SS         18:13TE  4: 3MS  5:55TS          7:41SR          1:52VT 
12-13  14:19MR 16:27SS         18:13TE  5: 4MS  5:55TS          7:43SR          0:51VT 
12-14  14:56MR 16:27SS         18:13TE          5:56TS  6: 1MS  7:43SR          0: 0VT 
12-15  15:40MR 16:27SS         18:13TE          5:56TS  6:55MS  7:45SR          0: 0VT 
12-16  16:25MR 16:27SS         18:15TE          5:58TS  7:43MS  7:45SR          0: 0VT 
12-17          16:28SS 17:16MR 18:15TE          5:58TS          7:46SR  8:26MS  0: 0VT 
12-18          16:28SS 18:10MR 18:16TE          5:58TS          7:46SR  9: 3MS  0: 0VT 
12-19          16:28SS         18:16TE 19: 7MR  6: 0TS          7:46SR  9:37MS  0:51VT 
12-20          16:28SS         18:16TE 20: 4MR  6: 0TS          7:48SR 10: 7MS  1:48VT 
12-21          16:28SS         18:16TE 21: 4MR  6: 1TS          7:48SR 10:34MS  2:47VT 
12-22          16:30SS         18:16TE 22: 4MR  6: 1TS          7:49SR 11: 1MS  3:47VT 
12-23          16:31SS         18:17TE 23: 4MR  6: 1TS          7:49SR 11:26MS  4:46VT 
12-24          16:31SS         18:19TE  0: 7MR  6: 1TS          7:49SR 11:53MS  5:47VT 
12-25          16:31SS         18:19TE  1:10MR  6: 1TS          7:49SR          6:51VT 
12-26  12:22MS 16:32SS         18:19TE  2:16MR  6: 3TS          7:49SR          7:57VT 
12-27  12:55MS 16:32SS         18:21TE  3:25MR  6: 3TS          7:49SR          9: 4VT 
12-28  13:34MS 16:34SS         18:21TE  4:34MR  6: 3TS          7:49SR         10:13VT 
12-29  14:21MS 16:34SS         18:22TE  5:43MR  6: 3TS          7:49SR         11:20VT 
12-30  15:16MS 16:36SS         18:22TE          6: 3TS  6:46MR  7:50SR         11:40VT 
12-31  16:22MS 16:37SS         18:23TE          6: 4TS  7:41MR  7:50SR         11:40VT 

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.