Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 5 27.  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   04:37:31   (  68.20, 109.41) 05/27/2018   04:37:06  (  68.17, 109.38)    3.31                25
 05/27/2018   05:27:57   ( -67.26, -82.12) 05/27/2018   05:26:49  ( -67.33, -83.95)   78.90                68
 05/29/2018   19:13:18   (  69.36,-111.01) 05/29/2018   19:14:24  (  69.25,-108.68)   92.41                66
 05/29/2018   20:03:42   ( -68.32,  57.72) 05/29/2018   20:04:09  ( -68.31,  57.77)    2.21                27
 05/29/2018   20:54:25   (  68.13,-134.74) 05/29/2018   20:53:37  (  68.14,-134.78)    2.16                48
 06/01/2018   11:29:57   (  68.50,   5.94) 06/01/2018   11:31:09  (  68.45,   6.18)   11.07                72
 06/01/2018   12:20:36   ( -68.26, 173.57) 06/01/2018   12:20:41  ( -68.24, 173.55)    2.41                 5
 06/01/2018   13:11:20   (  68.13, -18.95) 06/01/2018   13:10:08  (  68.12, -18.94)    0.97                72
 06/04/2018   03:46:49   (  68.33, 121.93) 06/04/2018   03:47:42  (  68.32, 121.89)    2.23                53
 06/04/2018   04:37:30   ( -68.19, -70.57) 06/04/2018   04:37:12  ( -68.22, -70.60)    2.72                18
 06/04/2018   05:28:00   (  67.31,  97.82) 06/04/2018   05:26:52  (  67.37,  96.08)   74.85                68
 06/06/2018   20:03:43   (  68.27,-122.22) 06/06/2018   20:04:13  (  68.30,-122.26)    3.30                30
 06/06/2018   20:54:24   ( -68.19,  45.21) 06/06/2018   20:53:42  ( -68.20,  45.26)    2.53                42
 06/09/2018   11:30:00   ( -68.77,-174.40) 06/09/2018   11:31:11  ( -68.68,-173.57)   35.11                71
 06/09/2018   12:20:37   (  68.27,  -6.44) 06/09/2018   12:20:43  (  68.28,  -6.41)    1.93                 6
 06/09/2018   13:11:18   ( -68.13, 161.05) 06/09/2018   13:10:14  ( -68.13, 161.05)    0.34                64