Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 6 28.  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)
 06/30/2021   16:40:57   (  68.70, -72.10) 06/30/2021   16:42:06  (  68.69, -72.13)    1.49                69
 06/30/2021   17:31:38   ( -68.56,  95.40) 06/30/2021   17:31:36  ( -68.58,  95.37)    3.15                 2
 06/30/2021   18:22:18   (  68.22, -96.85) 06/30/2021   18:21:06  (  68.30, -97.33)   21.82                72
 07/03/2021   08:57:53   (  68.63,  43.75) 07/03/2021   08:58:33  (  68.65,  43.69)    3.13                40
 07/03/2021   09:48:35   ( -68.54,-148.81) 07/03/2021   09:48:03  ( -68.54,-148.80)    0.57                32
 07/06/2021   00:24:15   ( -69.22,  -8.59) 07/06/2021   00:25:26  ( -69.11,  -7.49)   45.23                71
 07/06/2021   01:14:50   (  68.62, 159.53) 07/06/2021   01:15:00  (  68.60, 159.51)    2.23                10
 07/06/2021   02:05:31   ( -68.47, -32.96) 07/06/2021   02:04:30  ( -68.50, -32.98)    2.89                61
 07/08/2021   16:41:03   ( -68.73, 107.84) 07/08/2021   16:41:59  ( -68.72, 107.90)    2.50                56
 07/08/2021   17:31:46   (  68.56, -84.62) 07/08/2021   17:31:27  (  68.54, -84.67)    2.40                19
 07/08/2021   18:22:17   ( -67.87,  83.57) 07/08/2021   18:21:07  ( -67.89,  82.18)   58.08                70
 07/11/2021   08:07:34   (  69.72,  54.89) 07/11/2021   08:08:40  (  69.60,  57.28)   93.53                66
 07/11/2021   08:57:58   ( -68.67,-136.31) 07/11/2021   08:58:25  ( -68.67,-136.28)    1.12                27
 07/11/2021   09:48:42   (  68.55,  31.15) 07/11/2021   09:47:52  (  68.54,  31.21)    2.58                50