Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 12 8.  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)
 12/08/2019   02:56:05   (  68.37, 134.59) 12/08/2019   02:56:29  (  68.34, 134.57)    2.96                24
 12/08/2019   03:46:46   ( -68.24, -57.93) 12/08/2019   03:45:59  ( -68.23, -57.93)    1.06                47
 12/10/2019   18:22:17   ( -68.62,  82.72) 12/10/2019   18:23:29  ( -68.55,  83.06)   16.18                72
 12/10/2019   19:12:58   (  68.34,-109.60) 12/10/2019   19:12:58  (  68.33,-109.56)    1.75                 0
 12/10/2019   20:03:39   ( -68.20,  57.89) 12/10/2019   20:02:28  ( -68.22,  57.94)    3.26                71
 12/13/2019   10:39:07   ( -68.43,-161.26) 12/13/2019   10:40:00  ( -68.44,-161.20)    2.62                53
 12/13/2019   11:29:50   (  68.26,   6.28) 12/13/2019   11:29:28  (  68.27,   6.25)    2.18                22
 12/13/2019   12:20:19   ( -67.47, 174.56) 12/13/2019   12:19:10  ( -67.49, 172.98)   67.44                69
 12/16/2019   02:55:58   ( -68.35, -45.38) 12/16/2019   02:56:29  ( -68.38, -45.39)    3.06                31
 12/16/2019   03:46:42   (  68.23, 122.09) 12/16/2019   03:45:57  (  68.21, 122.05)    2.88                45
 12/18/2019   18:22:14   (  68.68, -97.36) 12/18/2019   18:23:26  (  68.58, -96.89)   21.82                72
 12/18/2019   19:12:51   ( -68.32,  70.43) 12/18/2019   19:12:59  ( -68.31,  70.42)    1.19                 8
 12/18/2019   20:03:35   (  68.21,-122.11) 12/18/2019   20:02:26  (  68.20,-122.08)    1.62                69
 12/21/2019   10:39:02   (  68.39,  18.80) 12/21/2019   10:39:58  (  68.41,  18.77)    1.96                56
 12/21/2019   11:29:44   ( -68.30,-173.76) 12/21/2019   11:29:28  ( -68.30,-173.71)    2.05                16
 12/21/2019   12:20:15   (  67.48,  -5.44) 12/21/2019   12:19:06  (  67.57,  -6.92)   63.81                69