Planning Tools
 
[Home MSU-RESAC] [Home UGL-RESAC] [Preview Scenes ] [Path/Row Calculator] [Schedule] [Orbit & WRS Info]
 
Preview Scenes
Click a tile on the map below to view Landsat 7 imagery available for that particular Path & Row. This portal to the US archive of ETM+ data is maintained by the RESAC office of the Basic Science and Remote Sensing Initiative (BSRSI) at Michigan State University. This system is an automated version of a browse product display effort started with RESAC partners at the Environmental Remote Sensing Center (ERSC) at the University of Wisconsin - Madison. Try our global interface at Landsat.org
 

Click on the map to view thumbnails of Landsat 7 imagery
 
Calculator
If you have latitude and longitude coordinates, you can use this USGS calculator to identify the path and row of footprint(s) that overlap any point on the globe. The calculator presents a world map showing the location of the WRS-2 scene with its center point closest to the requested coordinates. Conversely, you can enter WRS-2 Path and Row numbers and receive the latitude and longitude of the scene center point. Works with both degree-minute and decimal-degree formats.
 
Landsat 7 Path Acquisition Schedule
Want to know when Landsat 7 is passing over your area of interest? Identify your "path" of interest using the calculator or reference map above and scroll down the lookup table below to find the revisit dates for Landsat 7. The table covers the Upper Great Lakes region (paths 19 - 30) from July 1999 to January 2002. Wherever possible, the listed date of acquisition links to a GOES weather satellite image for that day and time. These can be used to assess general cloud cover on a particular date. Links to new GOES images are added regularly. [Note: GOES updates have been suspended pending functional modification of this feature. Try StripBuilder tool to view regional cloud cover for specific dates through Preview Tools above (-- sab 1 Nov 2000)]

We would like to credit our RESAC partners at the University of Minnesota for the idea of linking path/row revisit dates with GOES imagery. See their example at the TerraSIP site.
 
Path 30 Path 29 Path 28 Path 27 Path 26 Path 25 Path 24 Path 23 Path 22 Path 21 Path 20 Path 19
07/05/99 No Data 07/07/99 No Data 07/09/99 07/02/99 07/11/99 07/04/99 07/13/99 07/06/99 07/15/99 07/08/99
07/21/99 07/14/99 07/23/99 07/16/99 07/25/99 07/18/99 07/27/99 07/20/99 07/29/99 07/22/99 07/31/99 07/24/99
08/06/99 07/30/99 08/08/99 08/01/99 08/10/99 08/03/99 08/12/99 08/05/99 08/14/99 08/07/99 08/16/99 08/09/99
08/22/99 08/15/99 08/24/99 08/17/99 08/26/99 08/19/99 08/28/99 08/21/99 08/30/99 08/23/99 09/01/99 08/25/99
09/07/99 08/31/99 09/09/99 09/02/99 09/11/99 09/04/99 09/13/99 09/06/99 09/15/99 09/08/99 09/17/99 09/10/99
09/23/99 09/16/99 09/25/99 09/18/99 09/27/99 09/20/99 09/29/99 09/22/99 10/01/99 09/24/99 10/03/99 09/26/99
10/09/99 10/02/99 10/11/99 10/04/99 10/13/99 10/06/99 10/15/99 10/08/99 10/17/99 10/10/99 10/19/99 10/12/99
10/25/99 10/18/99 10/27/99 10/20/99 10/29/99 10/22/99 10/31/99 10/24/99 11/02/99 10/26/99 11/04/99 10/28/99
11/10/99 11/03/99 11/12/99 11/05/99 11/14/99 11/07/99 11/16/99 11/09/99 11/18/99 11/11/99 11/20/99 11/13/99
11/26/99 11/19/99 11/28/99 11/21/99 11/30/99 11/23/99 12/02/99 11/25/99 12/04/99 11/27/99 12/06/99 11/29/99
12/12/99 12/05/99 12/14/99 12/07/99 12/16/99 12/09/99 12/18/99 12/11/99 12/20/99 12/13/99 12/22/99 12/15/99
12/28/99 12/21/99 12/30/99 12/23/99 01/01/00 12/25/99 01/03/00 12/27/99 01/05/00 12/29/99 01/07/00 12/31/99
01/13/00 01/06/00 01/15/00 01/08/00 01/17/00 01/10/00 01/19/00 01/12/00 01/21/00 01/14/00 01/23/00 01/16/00
01/29/00 01/22/00 01/31/00 01/24/00 02/02/00 01/26/00 02/04/00 01/28/00 02/06/00 01/30/00 02/08/00 02/01/00
02/14/00 02/07/00 02/16/00 02/09/00 02/18/00 02/11/00 02/20/00 02/13/00 02/22/00 02/15/00 02/24/00 02/17/00
03/01/00 02/23/00 03/03/00 02/25/00 03/05/00 02/27/00 03/07/00 02/29/00 03/09/00 03/02/00 03/11/00 03/04/00
03/17/00 03/10/00 03/19/00 03/12/00 03/21/00 03/14/00 03/23/00 03/16/00 03/25/00 03/18/00 03/27/00 03/20/00
04/02/00 03/26/00 04/04/00 03/28/00 04/06/00 03/30/00 04/08/00 04/01/00 04/10/00 04/03/00 04/12/00 04/05/00
04/18/00 04/11/00 04/20/00 04/13/00 04/22/00 04/15/00 04/24/00 04/17/00 04/26/00 04/19/00 04/28/00 04/21/00
05/04/00 04/27/00 05/06/00 04/29/00 05/08/00 05/01/00 05/10/00 05/03/00 05/12/00 05/05/00 05/14/00 05/07/00
05/20/00 05/13/00 05/22/00 05/15/00 05/24/00 05/17/00 05/26/00 05/19/00 05/28/00 05/21/00 05/30/00 05/23/00
06/05/00 05/29/00 06/07/00 05/31/00 06/09/00 06/02/00 06/11/00 06/04/00 06/13/00 06/06/00 06/15/00 06/08/00
06/21/00 06/14/00 06/23/00 06/16/00 06/25/00 06/18/00 06/27/00 06/20/00 06/29/00 06/22/00 07/01/00 06/24/00
07/07/00 06/30/00 07/09/00 07/02/00 07/11/00 07/04/00 07/13/00 07/06/00 07/15/00 07/08/00 07/17/00 07/10/00
07/23/00 07/16/00 07/25/00 07/18/00 07/27/00 07/20/00 07/29/00 07/22/00 07/31/00 07/24/00 08/02/00 07/26/00
08/08/00 08/01/00 08/10/00 08/03/00 08/12/00 08/05/00 08/14/00 08/07/00 08/16/00 08/09/00 08/18/00 08/11/00
08/24/00 08/17/00 08/26/00 08/19/00 08/28/00 08/21/00 08/30/00 08/23/00 09/01/00 08/25/00 09/03/00 08/27/00
09/09/00 09/02/00 09/11/00 09/04/00 09/13/00 09/06/00 09/15/00 09/08/00 09/17/00 09/10/00 09/19/00 09/12/00
09/25/00 09/18/00 09/27/00 09/20/00 09/29/00 09/22/00 10/01/00 09/24/00 10/03/00 09/26/00 10/05/00 09/28/00
10/11/00 10/04/00 10/13/00 10/06/00 10/15/00 10/08/00 10/17/00 10/10/00 10/19/00 10/12/00 10/21/00 10/14/00
10/27/00 10/20/00 10/29/00 10/22/00 10/31/00 10/24/00 11/02/00 10/26/00 11/04/00 10/28/00 11/06/00 10/30/00
11/12/00 11/05/00 11/14/00 11/07/00 11/16/00 11/09/00 11/18/00 11/11/00 11/20/00 11/13/00 11/22/00 11/15/00
11/28/00 11/21/00 11/30/00 11/23/00 12/02/00 11/25/00 12/04/00 11/27/00 12/06/00 11/29/00 12/08/00 12/01/00
12/14/00 12/07/00 12/16/00 12/09/00 12/18/00 12/11/00 12/20/00 12/13/00 12/22/00 12/15/00 12/24/00 12/17/00
12/30/00 12/23/00 01/01/01 12/25/00 01/03/01 12/27/00 01/05/01 12/29/00 01/07/01 12/31/00 01/09/01 01/02/01
01/15/01 01/08/01 01/17/01 01/10/01 01/19/01 01/12/01 01/21/01 01/14/01 01/23/01 01/16/01 01/25/01 01/18/01
01/31/01 01/24/01 02/02/01 01/26/01 02/04/01 01/28/01 02/06/01 01/30/01 02/08/01 02/01/01 02/10/01 02/03/01
02/16/01 02/09/01 02/18/01 02/11/01 02/20/01 02/13/01 02/22/01 02/15/01 02/24/01 02/17/01 02/26/01 02/19/01
03/04/01 02/25/01 03/06/01 02/27/01 03/08/01 03/01/01 03/10/01 03/03/01 03/12/01 03/05/01 03/14/01 03/07/01
03/20/01 03/13/01 03/22/01 03/15/01 03/24/01 03/17/01 03/26/01 03/19/01 03/28/01 03/21/01 03/30/01 03/23/01
04/05/01 03/29/01 04/07/01 03/31/01 04/09/01 04/02/01 04/11/01 04/04/01 04/13/01 04/06/01 04/15/01 04/08/01
04/21/01 04/14/01 04/23/01 04/16/01 04/25/01 04/18/01 04/27/01 04/20/01 04/29/01 04/22/01 05/01/01 04/24/01
05/07/01 04/30/01 05/09/01 05/02/01 05/11/01 05/04/01 05/13/01 05/06/01 05/15/01 05/08/01 05/17/01 05/10/01
05/23/01 05/16/01 05/25/01 05/18/01 05/27/01 05/20/01 05/29/01 05/22/01 05/31/01 05/24/01 06/02/01 05/26/01
06/08/01 06/01/01 06/10/01 06/03/01 06/12/01 06/05/01 06/14/01 06/07/01 06/16/01 06/09/01 06/18/01 06/11/01
06/24/01 06/17/01 06/26/01 06/19/01 06/28/01 06/21/01 06/30/01 06/23/01 07/02/01 06/25/01 07/04/01 06/27/01
07/10/01 07/03/01 07/12/01 07/05/01 07/14/01 07/07/01 07/16/01 07/09/01 07/18/01 07/11/01 07/20/01 07/13/01
07/26/01 07/19/01 07/28/01 07/21/01 07/30/01 07/23/01 08/01/01 07/25/01 08/03/01 07/27/01 08/05/01 07/29/01
08/11/01 08/04/01 08/13/01 08/06/01 08/15/01 08/08/01 08/17/01 08/10/01 08/19/01 08/12/01 08/21/01 08/14/01
08/27/01 08/20/01 08/29/01 08/22/01 08/31/01 08/24/01 09/02/01 08/26/01 09/04/01 08/28/01 09/06/01 08/30/01
09/12/01 09/05/01 09/14/01 09/07/01 09/16/01 09/09/01 09/18/01 09/11/01 09/20/01 09/13/01 09/22/01 09/15/01
09/28/01 09/21/01 09/30/01 09/23/01 10/02/01 09/25/01 10/04/01 09/27/01 10/06/01 09/29/01 10/08/01 10/01/01
10/14/01 10/07/01 10/16/01 10/09/01 10/18/01 10/11/01 10/20/01 10/13/01 10/22/01 10/15/01 10/24/01 10/17/01
10/30/01 10/23/01 11/01/01 10/25/01 11/03/01 10/27/01 11/05/01 10/29/01 11/07/01 10/31/01 11/09/01 11/02/01
11/15/01 11/08/01 11/17/01 11/10/01 11/19/01 11/12/01 11/21/01 11/14/01 11/23/01 11/16/01 11/25/01 11/18/01
12/01/01 11/24/01 12/03/01 11/26/01 12/05/01 11/28/01 12/07/01 11/30/01 12/09/01 12/02/01 12/11/01 12/04/01
12/17/01 12/10/01 12/19/01 12/12/01 12/21/01 12/14/01 12/23/01 12/16/01 12/25/01 12/18/01 12/27/01 12/20/01
01/02/02 12/26/01 01/04/02 12/28/01 01/06/02 12/30/01 01/08/02 01/01/02 01/10/02 01/03/02 01/12/02 01/05/02
01/18/02 01/11/02 01/20/02 01/13/02 01/22/02 01/15/02 01/24/02 01/17/02 01/26/02 01/19/02 01/28/02 01/21/02
 
Landsat 7 Orbital and WRS-2 Information
Landsat 7 has a 16-day revisit cycle. It operates in a sun-synchronous, near-polar orbit at a nominal altitude of 705.3 km (438.4 miles) measured at the equator. The descending orbital node time is 9:45 AM +/- 15 minutes local time at the equator. The satellite completes its repetitive circular orbit every 98.9 minutes as the Earth rotates beneath it. It takes 233 unique paths to cover the Earth's surface. In 16 days, the satellite traces all 233 paths twice (233 daytime descending and 233 nighttime ascending). This creates an "interlacing" pattern with its paths that is visible in the table below. In a single day, the satellite makes 15 daylight passes (see this example).

Most scientific interest in Landsat imagery involves interpreting solar reflectance off the surface of the land. Therefore nearly all scenes collected are daytime scenes over land. Scientists studying thermal phenomena such as volcanoes also utilize nighttime images in their research. Each pass of the satellite generates "strips" of data that are "cut" into scenes with row designations. It takes only 23.92 seconds for Landsat 7 to collect the data for each scene along its path. It passes from north to south over the entire Upper Great Lakes region in about 2 minutes. Local time of acquisition in the region depends on location within a given time zone and the observance of daylight savings time. For example, Landsat 7 passes over Lansing, MI at about 16:15 GMT making it 11:15 AM EDT (in the summer) and 10:15 AM EST (in the winter).

For more information on the WRS 1 & 2 (Worldwide Reference System, i.e. path and row) and other orbital details visit the WRS page of NASA's Landsat 7 site. Click here for a global WRS-2 map of daytime scenes. To view an excellent interactive real-time model of the orbital characteristics of Landsat 7 and many other satellites try JTrack - 3D. Also visit the USGS Landsat 7 home page for data information.
 
Last Updated on 23-Mar-2002 22:09
Email: batzlis@msu.edu
Visitors since 01-Nov-2000

Path 19 Row 30 Path 19 Row 31 Path 20 Row 29 Path 20 Row 30 Path 20 Row 31 Path 21 Row 28 Path 21 Row 29 Path 21 Row 30 Path 21 Row 31 Path 22 Row 31 Path 22 Row 30 Path 22 Row 29 Path 22 Row 28 Path 22 Row 27 Path 23 Row 31 Path 23 Row 30 Path 23 Row 29 Path 23 Row 28 Path 23 Row 27 Path 24 Row 27 Path 24 Row 28 Path 24 Row 29 Path 24 Row 30 Path 24 Row 31 Path 25 Row 27 Path 25 Row 28 Path 25 Row 29 Path 25 Row 30 Path 25 Row 31 Path 26 Row 31 Path 26 Row 30 Path 26 Row 29 Path 26 Row 28 Path 26 Row 26 Path 26 Row 27 Path 27 Row 31 Path 27 Row 30 Path 27 Row 29 Path 27 Row 28 Path 27 Row 26 Path 27 Row 27 Path 28 Row 28 Path 28 Row 27 Path 28 Row 26 Path 28 Row 29 Path 28 Row 30 Path 28 Row 31 Path 29 Row 31 Path 29 Row 30 Path 29 Row 29 Path 29 Row 28 Path 29 Row 27 Path 29 Row 26 Path 30 Row 31 Path 30 Row 30 Path 30 Row 29 Path 30 Row 28 Path 30 Row 27 Path 30 Row 26