Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 3 23.  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)
 03/24/2018   02:55:58   (  68.61, 134.27) 03/24/2018   02:57:09  (  68.52, 134.76)   22.36                71
 03/24/2018   03:46:35   ( -68.26, -57.95) 03/24/2018   03:46:42  ( -68.25, -57.94)    1.83                 7
 03/24/2018   04:37:19   (  68.13, 109.52) 03/24/2018   04:36:09  (  68.14, 109.58)    2.34                70
 03/26/2018   19:12:49   (  68.33,-109.60) 03/26/2018   19:13:45  (  68.32,-109.62)    1.85                56
 03/26/2018   20:03:30   ( -68.19,  57.90) 03/26/2018   20:03:15  ( -68.22,  57.89)    2.68                15
 03/26/2018   20:54:02   (  67.42,-133.84) 03/26/2018   20:52:53  (  67.49,-135.30)   63.01                69
 03/29/2018   11:29:43   (  68.27,   6.25) 03/29/2018   11:30:17  (  68.28,   6.20)    2.20                34
 03/29/2018   12:20:25   ( -68.18, 173.68) 03/29/2018   12:19:47  ( -68.18, 173.72)    1.36                38
 04/01/2018   02:56:05   ( -68.92, -46.14) 04/01/2018   02:57:15  ( -68.79, -44.95)   49.94                70
 04/01/2018   03:46:39   (  68.27, 122.02) 04/01/2018   03:46:49  (  68.29, 122.08)    3.55                10
 04/01/2018   04:37:20   ( -68.12, -70.47) 04/01/2018   04:36:20  ( -68.14, -70.47)    1.94                60
 04/03/2018   19:12:51   ( -68.38,  70.34) 04/03/2018   19:13:55  ( -68.35,  70.38)    2.90                64
 04/03/2018   20:03:34   (  68.21,-122.14) 04/03/2018   20:03:22  (  68.24,-122.11)    3.11                12
 04/03/2018   20:54:10   ( -67.79,  45.71) 04/03/2018   20:52:58  ( -67.80,  45.01)   29.40                72