Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 6 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)
 06/09/2018   11:29:59   ( -68.74,-174.36) 06/09/2018   11:31:10  ( -68.62,-173.63)   32.63                71
 06/09/2018   12:20:37   (  68.28,  -6.46) 06/09/2018   12:20:41  (  68.28,  -6.40)    2.49                 4
 06/09/2018   13:11:17   ( -68.10, 161.09) 06/09/2018   13:10:12  ( -68.12, 161.05)    2.72                65
 06/12/2018   03:46:47   ( -68.37, -58.10) 06/12/2018   03:47:45  ( -68.36, -58.07)    1.26                58
 06/12/2018   04:37:31   (  68.23, 109.38) 06/12/2018   04:37:12  (  68.24, 109.43)    2.53                19
 06/12/2018   05:28:02   ( -67.57, -82.47) 06/12/2018   05:26:51  ( -67.64, -83.63)   49.91                71
 06/14/2018   20:03:41   ( -68.32,  57.74) 06/14/2018   20:04:16  ( -68.34,  57.77)    2.60                35
 06/14/2018   20:54:25   (  68.18,-134.78) 06/14/2018   20:53:44  (  68.16,-134.79)    2.69                41
 06/17/2018   11:30:01   (  68.78,   5.59) 06/17/2018   11:31:12  (  68.69,   6.44)   35.71                71
 06/17/2018   12:20:35   ( -68.27, 173.58) 06/17/2018   12:20:48  ( -68.26, 173.56)    1.12                13
 06/17/2018   13:11:19   (  68.14, -18.95) 06/17/2018   13:10:15  (  68.14, -18.95)    0.12                64
 06/20/2018   03:46:47   (  68.36, 121.92) 06/20/2018   03:47:48  (  68.34, 121.89)    2.21                61
 06/20/2018   04:37:28   ( -68.22, -70.59) 06/20/2018   04:37:18  ( -68.25, -70.59)    3.19                10
 06/20/2018   05:28:03   (  67.61,  97.48) 06/20/2018   05:26:53  (  67.68,  96.39)   46.95                70