Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 5 25.  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)
 05/27/2018   03:46:48   ( -68.35, -58.10) 05/27/2018   03:47:38  ( -68.36, -58.04)    2.36                50
 05/27/2018   04:37:31   (  68.17, 109.44) 05/27/2018   04:37:06  (  68.19, 109.40)    3.05                25
 05/27/2018   05:27:58   ( -67.28, -82.15) 05/27/2018   05:26:50  ( -67.31, -83.98)   78.61                68
 05/29/2018   19:13:18   (  69.34,-110.97) 05/29/2018   19:14:25  (  69.21,-108.74)   89.07                67
 05/29/2018   20:03:42   ( -68.29,  57.76) 05/29/2018   20:04:10  ( -68.27,  57.72)    2.69                28
 05/29/2018   20:54:26   (  68.16,-134.77) 05/29/2018   20:53:37  (  68.15,-134.77)    0.87                49
 06/01/2018   11:29:58   (  68.53,   5.90) 06/01/2018   11:31:08  (  68.49,   6.23)   13.87                70
 06/01/2018   12:20:35   ( -68.23, 173.61) 06/01/2018   12:20:40  ( -68.23, 173.54)    2.73                 5
 06/01/2018   13:11:19   (  68.10, -18.92) 06/01/2018   13:10:07  (  68.11, -18.95)    1.41                72
 06/04/2018   03:46:48   (  68.31, 121.96) 06/04/2018   03:47:40  (  68.33, 121.91)    3.38                52
 06/04/2018   04:37:30   ( -68.22, -70.61) 06/04/2018   04:37:10  ( -68.23, -70.57)    1.93                20
 06/04/2018   05:27:59   (  67.29,  97.85) 06/04/2018   05:26:51  (  67.33,  96.03)   78.02                68
 06/06/2018   20:03:43   (  68.30,-122.26) 06/06/2018   20:04:10  (  68.33,-122.22)    2.92                27
 06/06/2018   20:54:24   ( -68.16,  45.24) 06/06/2018   20:53:41  ( -68.18,  45.23)    1.41                43