Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 1 1.  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)
 01/03/2018   02:56:22   (  68.33, 134.56) 01/03/2018   02:56:56  (  68.35, 134.59)    2.78                34
 01/03/2018   03:47:03   ( -68.19, -57.94) 01/03/2018   03:46:27  ( -68.19, -57.97)    1.30                36
 01/05/2018   18:22:41   ( -68.95,  82.21) 01/05/2018   18:23:51  ( -68.87,  83.45)   50.47                70
 01/05/2018   19:13:15   (  68.29,-109.62) 01/05/2018   19:13:26  (  68.31,-109.59)    2.04                11
 01/05/2018   20:03:56   ( -68.15,  57.89) 01/05/2018   20:02:57  ( -68.15,  57.86)    1.27                59
 01/08/2018   10:39:24   ( -68.37,-161.25) 01/08/2018   10:40:29  ( -68.37,-161.28)    1.25                65
 01/08/2018   11:30:08   (  68.26,   6.21) 01/08/2018   11:29:56  (  68.25,   6.23)    0.98                12
 01/08/2018   12:20:43   ( -67.79, 174.11) 01/08/2018   12:19:31  ( -67.87, 173.41)   30.74                72
 01/11/2018   02:56:17   ( -68.34, -45.43) 01/11/2018   02:56:58  ( -68.36, -45.41)    3.15                41
 01/11/2018   03:47:01   (  68.22, 122.03) 01/11/2018   03:46:26  (  68.19, 122.03)    3.44                35
 01/13/2018   18:22:39   (  69.04, -97.91) 01/13/2018   18:23:48  (  68.90, -96.50)   58.57                69
 01/13/2018   19:13:09   ( -68.30,  70.39) 01/13/2018   19:13:27  ( -68.29,  70.39)    0.91                18
 01/13/2018   20:03:53   (  68.19,-122.16) 01/13/2018   20:02:54  (  68.18,-122.10)    2.63                59