Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 6 24.  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)
 06/25/2018   11:30:01   ( -68.92,-174.58) 06/25/2018   11:31:11  ( -68.83,-173.39)   48.59                70
 06/25/2018   12:20:36   (  68.30,  -6.45) 06/25/2018   12:20:46  (  68.27,  -6.44)    3.19                10
 06/25/2018   13:11:17   ( -68.18, 161.02) 06/25/2018   13:10:16  ( -68.17, 161.08)    2.30                61
 06/28/2018   03:46:44   ( -68.34, -58.04) 06/28/2018   03:47:48  ( -68.36, -58.09)    3.09                64
 06/28/2018   04:37:29   (  68.26, 109.37) 06/28/2018   04:37:15  (  68.24, 109.41)    2.36                14
 06/28/2018   05:28:03   ( -67.76, -82.68) 06/28/2018   05:26:51  ( -67.81, -83.46)   33.53                72
 06/30/2018   20:03:39   ( -68.36,  57.71) 06/30/2018   20:04:18  ( -68.34,  57.75)    2.91                39
 06/30/2018   20:54:23   (  68.22,-134.81) 06/30/2018   20:53:45  (  68.21,-134.75)    2.63                38
 07/03/2018   11:30:01   (  68.94,   5.40) 07/03/2018   11:31:11  (  68.79,   6.55)   48.98                70
 07/03/2018   12:20:33   ( -68.32, 173.54) 07/03/2018   12:20:48  ( -68.31, 173.59)    2.97                15
 07/03/2018   13:11:16   (  68.14, -18.92) 07/03/2018   13:10:16  (  68.12, -18.98)    3.05                60
 07/06/2018   03:46:45   (  68.37, 121.93) 07/06/2018   03:47:48  (  68.36, 121.90)    1.81                63
 07/06/2018   04:37:27   ( -68.29, -70.65) 07/06/2018   04:37:18  ( -68.27, -70.58)    3.60                 9
 07/06/2018   05:28:03   (  67.73,  97.36) 07/06/2018   05:26:52  (  67.75,  96.46)   38.09                71