Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2015 1 25.  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)
 01/25/2015   02:01:28   (  70.79, 146.99) 01/25/2015   02:00:18  (  70.77, 147.07)    3.62                70
 01/25/2015   02:50:58   ( -70.69, -45.54) 01/25/2015   02:51:00  ( -70.70, -45.50)    2.37                 2
 01/25/2015   03:40:29   (  70.36, 121.62) 01/25/2015   03:41:40  (  70.36, 122.35)   27.18                71
 01/27/2015   18:17:58   (  70.75, -97.20) 01/27/2015   18:17:07  (  70.76, -97.13)    2.70                51
 01/27/2015   19:07:27   ( -70.70,  70.36) 01/27/2015   19:07:49  ( -70.69,  70.31)    2.77                22
 01/30/2015   10:34:28   (  70.77,  18.70) 01/30/2015   10:33:56  (  70.75,  18.67)    2.86                32
 01/30/2015   11:23:58   ( -70.67,-173.82) 01/30/2015   11:24:38  ( -70.67,-173.89)    2.62                40
 02/02/2015   02:01:21   ( -71.45, -32.00) 02/02/2015   02:00:13  ( -71.53, -34.19)   77.89                68
 02/02/2015   02:50:59   (  70.74, 134.53) 02/02/2015   02:50:44  (  70.75, 134.46)    2.42                15
 02/02/2015   03:40:30   ( -70.59, -58.07) 02/02/2015   03:41:25  ( -70.61, -58.01)    3.28                55
 02/04/2015   18:18:04   ( -70.89,  82.96) 02/04/2015   18:16:51  ( -70.96,  82.58)   16.01                73
 02/04/2015   19:07:32   (  70.72,-109.65) 02/04/2015   19:07:32  (  70.69,-109.67)    3.39                 0
 02/04/2015   19:57:02   ( -70.63,  57.84) 02/04/2015   19:58:14  ( -70.61,  57.78)    2.89                72
 02/07/2015   10:34:40   ( -70.76,-161.38) 02/07/2015   10:33:36  ( -70.75,-161.29)    3.19                64
 02/07/2015   11:24:06   (  70.71,   6.19) 02/07/2015   11:24:21  (  70.70,   6.10)    3.16                15