Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 9 22.  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)
 09/24/2019   09:49:14   (  69.47,  29.94) 09/24/2019   09:50:20  (  69.37,  32.31)   93.09                66
 09/24/2019   10:39:38   ( -68.42,-161.30) 09/24/2019   10:40:05  ( -68.43,-161.25)    2.50                27
 09/24/2019   11:30:21   (  68.24,   6.23) 09/24/2019   11:29:33  (  68.27,   6.19)    2.89                48
 09/27/2019   02:05:53   (  68.62, 146.89) 09/27/2019   02:07:03  (  68.60, 147.19)   12.38                70
 09/27/2019   02:56:32   ( -68.36, -45.45) 09/27/2019   02:56:35  ( -68.38, -45.44)    2.00                 3
 09/27/2019   03:47:15   (  68.20, 122.07) 09/27/2019   03:46:03  (  68.21, 122.01)    3.32                72
 09/29/2019   18:22:45   (  68.47, -97.13) 09/29/2019   18:23:34  (  68.48, -97.07)    3.00                49
 09/29/2019   19:13:26   ( -68.32,  70.38) 09/29/2019   19:13:05  ( -68.33,  70.37)    1.17                21
 09/29/2019   20:03:54   (  67.34,-121.10) 09/29/2019   20:02:47  (  67.37,-123.09)   85.26                67
 10/02/2019   10:39:39   (  68.42,  18.71) 10/02/2019   10:40:04  (  68.42,  18.73)    0.98                25
 10/02/2019   11:30:19   ( -68.27,-173.78) 10/02/2019   11:29:34  ( -68.26,-173.83)    1.98                45
 10/05/2019   02:05:52   ( -68.70, -33.20) 10/05/2019   02:07:03  ( -68.64, -32.77)   18.71                71
 10/05/2019   02:56:32   (  68.38, 134.54) 10/05/2019   02:56:32  (  68.40, 134.59)    3.24                 0
 10/05/2019   03:47:13   ( -68.23, -57.95) 10/05/2019   03:46:03  ( -68.25, -57.96)    2.70                70