Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2015 1 20.  Predictions up to the next  14.0 days:

     Date     Time(LANDSAT-8) LANDSAT-8 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/22/2015   09:44:50   (  71.36,  32.00) 01/22/2015   09:43:41  (  71.40,  30.23)   63.03                69
 01/22/2015   10:34:29   ( -70.76,-161.31) 01/22/2015   10:34:12  ( -70.75,-161.36)    1.87                17
 01/22/2015   11:23:56   (  70.65,   6.17) 01/22/2015   11:24:56  (  70.63,   6.15)    2.75                60
 01/25/2015   02:01:27   (  70.81, 147.02) 01/25/2015   02:00:19  (  70.80, 147.02)    0.95                68
 01/25/2015   02:50:57   ( -70.70, -45.51) 01/25/2015   02:51:01  ( -70.73, -45.54)    3.16                 4
 01/25/2015   03:40:29   (  70.32, 121.56) 01/25/2015   03:41:40  (  70.34, 122.39)   30.87                71
 01/27/2015   18:17:53   (  70.79, -97.13) 01/27/2015   18:17:07  (  70.78, -97.16)    1.52                46
 01/27/2015   19:07:23   ( -70.68,  70.34) 01/27/2015   19:07:48  ( -70.65,  70.37)    3.25                25
 01/30/2015   10:34:20   (  70.75,  18.70) 01/30/2015   10:33:56  (  70.77,  18.64)    2.87                24
 01/30/2015   11:23:50   ( -70.64,-173.83) 01/30/2015   11:24:37  ( -70.63,-173.82)    1.15                47
 02/02/2015   02:01:17   ( -70.97, -32.72) 02/02/2015   02:00:04  ( -71.02, -33.31)   22.19                73
 02/02/2015   02:50:47   (  70.70, 134.51) 02/02/2015   02:50:44  (  70.70, 134.53)    1.13                 3
 02/02/2015   03:40:17   ( -70.59, -58.02) 02/02/2015   03:41:26  ( -70.62, -58.02)    3.21                69