Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 9 5.  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)
 09/05/2018   11:30:20   (  68.40,   6.07) 09/05/2018   11:31:06  (  68.42,   6.10)    2.22                46
 09/05/2018   12:21:01   ( -68.25, 173.58) 09/05/2018   12:20:37  ( -68.24, 173.52)    2.33                24
 09/05/2018   13:11:27   (  67.16, -17.78) 09/05/2018   13:10:21  (  67.18, -20.04)   97.54                66
 09/08/2018   02:56:47   ( -69.28, -46.66) 09/08/2018   02:57:55  ( -69.20, -44.68)   78.62                68
 09/08/2018   03:47:16   (  68.36, 121.88) 09/08/2018   03:47:35  (  68.38, 121.93)    2.36                19
 09/08/2018   04:37:57   ( -68.21, -70.61) 09/08/2018   04:37:06  ( -68.21, -70.64)    1.49                51
 09/10/2018   19:13:28   ( -68.44,  70.24) 09/10/2018   19:14:37  ( -68.45,  70.25)    0.87                69
 09/10/2018   20:04:11   (  68.28,-122.24) 09/10/2018   20:04:05  (  68.28,-122.30)    2.94                 6
 09/10/2018   20:54:50   ( -68.02,  45.41) 09/10/2018   20:53:37  ( -68.06,  45.07)   15.11                73
 09/13/2018   11:30:24   ( -68.41,-173.95) 09/13/2018   11:31:06  ( -68.42,-173.91)    1.99                42
 09/13/2018   12:21:07   (  68.24,  -6.43) 09/13/2018   12:20:34  (  68.25,  -6.46)    1.73                33
 09/16/2018   02:56:47   (  69.01, 133.69) 09/16/2018   02:57:57  (  68.89, 134.92)   50.97                70
 09/16/2018   03:47:18   ( -68.32, -58.07) 09/16/2018   03:47:35  ( -68.34, -58.13)    2.83                17
 09/16/2018   04:38:02   (  68.21, 109.38) 09/16/2018   04:37:02  (  68.22, 109.38)    0.70                60
 09/18/2018   19:13:33   (  68.45,-109.78) 09/18/2018   19:14:33  (  68.47,-109.72)    3.07                60
 09/18/2018   20:04:14   ( -68.29,  57.74) 09/18/2018   20:04:04  ( -68.31,  57.72)    2.03                10
 09/18/2018   20:54:49   (  67.70,-134.21) 09/18/2018   20:53:39  (  67.74,-135.30)   46.25                70