Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 12 3.  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)
 12/05/2018   02:06:09   ( -69.33, -34.11) 12/05/2018   02:07:16  ( -69.23, -31.96)   85.07                67
 12/05/2018   02:56:37   (  68.35, 134.52) 12/05/2018   02:56:57  (  68.34, 134.57)    1.98                20
 12/05/2018   03:47:18   ( -68.22, -57.98) 12/05/2018   03:46:27  ( -68.23, -57.93)    2.70                51
 12/07/2018   18:22:47   ( -68.42,  82.89) 12/07/2018   18:23:56  ( -68.41,  82.89)    1.63                69
 12/07/2018   19:13:31   (  68.30,-109.64) 12/07/2018   19:13:23  (  68.30,-109.60)    1.94                 8
 12/07/2018   20:04:09   ( -68.00,  58.06) 12/07/2018   20:02:56  ( -68.02,  57.71)   14.77                73
 12/10/2018   10:39:40   ( -68.37,-161.27) 12/10/2018   10:40:20  ( -68.39,-161.22)    3.29                40
 12/10/2018   11:30:24   (  68.25,   6.19) 12/10/2018   11:29:48  (  68.22,   6.22)    3.30                36
 12/13/2018   02:06:00   (  68.84, 146.56) 12/13/2018   02:07:10  (  68.75, 147.47)   38.44                70
 12/13/2018   02:56:34   ( -68.32, -45.43) 12/13/2018   02:56:46  ( -68.30, -45.44)    1.76                12
 12/13/2018   03:47:18   (  68.20, 122.02) 12/13/2018   03:46:13  (  68.18, 122.07)    2.90                65
 12/15/2018   18:22:46   (  68.37, -97.05) 12/15/2018   18:23:41  (  68.35, -97.11)    3.07                55
 12/15/2018   19:13:28   ( -68.27,  70.40) 12/15/2018   19:13:11  ( -68.24,  70.40)    2.83                17
 12/15/2018   20:03:58   (  67.40,-121.22) 12/15/2018   20:02:50  (  67.45,-122.87)   70.59                68