Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 1 20.  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)
 01/22/2019   02:56:25   (  68.31, 134.56) 01/22/2019   02:56:56  (  68.31, 134.54)    1.32                31
 01/22/2019   03:47:07   ( -68.22, -58.01) 01/22/2019   03:46:26  ( -68.20, -57.96)    2.73                41
 01/24/2019   18:22:42   ( -68.78,  82.40) 01/24/2019   18:23:53  ( -68.67,  83.21)   35.15                71
 01/24/2019   19:13:19   (  68.29,-109.64) 01/24/2019   19:13:25  (  68.28,-109.62)    1.57                 6
 01/24/2019   20:04:00   ( -68.15,  57.86) 01/24/2019   20:02:55  ( -68.17,  57.89)    2.94                65
 01/27/2019   10:39:28   ( -68.34,-161.24) 01/27/2019   10:40:27  ( -68.36,-161.29)    2.65                59
 01/27/2019   11:30:12   (  68.22,   6.22) 01/27/2019   11:29:54  (  68.24,   6.22)    2.38                18
 01/27/2019   12:20:44   ( -67.59, 174.31) 01/27/2019   12:19:33  ( -67.64, 173.15)   49.56                71
 01/30/2019   02:56:22   ( -68.33, -45.45) 01/30/2019   02:56:56  ( -68.32, -45.45)    0.56                34
 01/30/2019   03:47:06   (  68.21, 122.00) 01/30/2019   03:46:23  (  68.20, 122.06)    2.34                43
 02/01/2019   18:22:39   (  68.73, -97.53) 02/01/2019   18:23:50  (  68.60, -96.85)   30.69                71
 02/01/2019   19:13:14   ( -68.26,  70.40) 02/01/2019   19:13:24  ( -68.28,  70.39)    2.48                10
 02/01/2019   20:03:58   (  68.15,-122.14) 02/01/2019   20:02:51  (  68.16,-122.11)    2.01                67