Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 6 21.  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)
 06/23/2019   02:56:19   ( -68.34, -45.47) 06/23/2019   02:56:56  ( -68.31, -45.50)    3.23                37
 06/23/2019   03:47:03   (  68.21, 122.01) 06/23/2019   03:46:23  (  68.20, 122.01)    0.92                40
 06/25/2019   18:22:39   (  68.73, -97.53) 06/25/2019   18:23:50  (  68.62, -96.88)   29.30                71
 06/25/2019   19:13:14   ( -68.28,  70.38) 06/25/2019   19:13:24  ( -68.30,  70.36)    2.25                10
 06/25/2019   20:03:58   (  68.15,-122.14) 06/25/2019   20:02:51  (  68.18,-122.14)    3.27                67
 06/28/2019   10:39:28   (  68.35,  18.74) 06/28/2019   10:40:22  (  68.37,  18.70)    2.31                54
 06/28/2019   11:30:10   ( -68.27,-173.84) 06/28/2019   11:29:52  ( -68.27,-173.79)    2.16                18
 06/28/2019   12:20:40   (  67.38,  -5.44) 06/28/2019   12:19:31  (  67.47,  -7.06)   70.05                69
 07/01/2019   02:56:24   (  68.35, 134.51) 07/01/2019   02:56:50  (  68.33, 134.54)    2.41                26
 07/01/2019   03:47:05   ( -68.21, -57.99) 07/01/2019   03:46:21  ( -68.18, -58.01)    3.31                44
 07/03/2019   18:22:37   ( -68.58,  82.67) 07/03/2019   18:23:48  ( -68.53,  83.02)   15.14                71
 07/03/2019   19:13:18   (  68.29,-109.65) 07/03/2019   19:13:17  (  68.29,-109.63)    1.21                 1
 07/03/2019   20:03:59   ( -68.15,  57.85) 07/03/2019   20:02:48  ( -68.14,  57.83)    1.47                71