Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 12 14.  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)
 12/16/2019   02:55:58   ( -68.35, -45.38) 12/16/2019   02:56:30  ( -68.36, -45.41)    1.61                32
 12/16/2019   03:46:42   (  68.23, 122.09) 12/16/2019   03:45:58  (  68.20, 122.05)    3.04                44
 12/18/2019   18:22:16   (  68.79, -97.50) 12/18/2019   18:23:27  (  68.65, -96.82)   31.42                71
 12/18/2019   19:12:51   ( -68.33,  70.43) 12/18/2019   19:13:01  ( -68.31,  70.41)    1.83                10
 12/18/2019   20:03:35   (  68.20,-122.11) 12/18/2019   20:02:28  (  68.21,-122.08)    1.34                67
 12/21/2019   10:39:02   (  68.39,  18.80) 12/21/2019   10:40:02  (  68.39,  18.75)    2.33                60
 12/21/2019   11:29:44   ( -68.30,-173.76) 12/21/2019   11:29:32  ( -68.29,-173.75)    1.71                12
 12/21/2019   12:20:18   (  67.64,  -5.63) 12/21/2019   12:19:08  (  67.67,  -6.82)   50.22                70
 12/24/2019   02:55:55   (  68.37, 134.60) 12/24/2019   02:56:33  (  68.39, 134.62)    2.37                38
 12/24/2019   03:46:36   ( -68.23, -57.89) 12/24/2019   03:46:04  ( -68.23, -57.94)    2.20                32
 12/26/2019   18:22:17   ( -69.21,  81.94) 12/26/2019   18:23:25  ( -69.14,  83.78)   73.15                68
 12/26/2019   19:12:47   (  68.36,-109.60) 12/26/2019   19:13:04  (  68.36,-109.55)    2.08                17
 12/26/2019   20:03:28   ( -68.21,  57.91) 12/26/2019   20:02:35  ( -68.20,  57.89)    0.72                53