Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2016 4 17.  Predictions up to the next  14.0 days:

     Date     Time(NPP) NPP Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/19/2016   02:06:26   ( -68.53, -32.89) 04/19/2016   02:07:33  ( -68.51, -32.92)    3.27                67
 04/19/2016   02:57:10   (  68.42, 134.57) 04/19/2016   02:57:00  (  68.39, 134.59)    2.89                10
 04/19/2016   03:47:46   ( -68.00, -57.58) 04/19/2016   03:46:34  ( -68.08, -58.15)   25.36                72
 04/21/2016   18:23:21   ( -68.49,  82.94) 04/21/2016   18:24:13  ( -68.50,  82.91)    1.88                52
 04/21/2016   19:14:05   (  68.37,-109.60) 04/21/2016   19:13:40  (  68.39,-109.58)    1.77                25
 04/21/2016   20:04:32   ( -67.47,  58.83) 04/21/2016   20:03:24  ( -67.52,  57.04)   76.59                68
 04/24/2016   10:40:17   ( -68.50,-161.31) 04/24/2016   10:40:57  ( -68.50,-161.27)    1.81                40
 04/24/2016   11:31:00   (  68.33,   6.21) 04/24/2016   11:30:25  (  68.33,   6.17)    1.80                35
 04/27/2016   02:57:11   ( -68.46, -45.50) 04/27/2016   02:57:45  ( -68.46, -45.53)    1.27                34
 04/27/2016   03:47:55   (  68.35, 121.96) 04/27/2016   03:47:12  (  68.34, 121.98)    1.26                43
 04/29/2016   19:14:07   ( -68.48,  70.24) 04/29/2016   19:14:37  ( -68.47,  70.28)    1.84                30
 04/29/2016   20:04:50   (  68.32,-122.24) 04/29/2016   20:04:05  (  68.31,-122.28)    2.14                45