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  (  68.41,   6.09)    1.99                46
 09/05/2018   12:21:01   ( -68.25, 173.58) 09/05/2018   12:20:37  ( -68.24, 173.52)    2.50                24
 09/05/2018   13:11:27   (  67.16, -17.78) 09/05/2018   13:10:21  (  67.18, -20.04)   97.64                66
 09/08/2018   02:56:47   ( -69.28, -46.66) 09/08/2018   02:57:55  ( -69.20, -44.69)   78.39                68
 09/08/2018   03:47:16   (  68.36, 121.88) 09/08/2018   03:47:35  (  68.37, 121.92)    1.69                19
 09/08/2018   04:37:57   ( -68.21, -70.61) 09/08/2018   04:37:06  ( -68.20, -70.65)    2.16                51
 09/10/2018   19:13:28   ( -68.44,  70.24) 09/10/2018   19:14:37  ( -68.44,  70.23)    0.77                69
 09/10/2018   20:04:12   (  68.33,-122.31) 09/10/2018   20:04:04  (  68.33,-122.25)    2.20                 8
 09/10/2018   20:54:50   ( -68.02,  45.41) 09/10/2018   20:53:37  ( -68.05,  45.05)   15.29                73
 09/13/2018   11:30:24   ( -68.41,-173.95) 09/13/2018   11:31:06  ( -68.40,-173.93)    1.55                42
 09/13/2018   12:21:07   (  68.24,  -6.43) 09/13/2018   12:20:34  (  68.23,  -6.49)    3.18                33
 09/16/2018   02:56:47   (  69.02, 133.69) 09/16/2018   02:57:56  (  68.91, 134.94)   51.46                69
 09/16/2018   03:47:19   ( -68.38, -58.14) 09/16/2018   03:47:34  ( -68.36, -58.10)    2.72                15
 09/16/2018   04:38:02   (  68.21, 109.38) 09/16/2018   04:37:01  (  68.24, 109.41)    3.27                61
 09/18/2018   19:13:33   (  68.45,-109.78) 09/18/2018   19:14:33  (  68.42,-109.78)    3.37                60
 09/18/2018   20:04:14   ( -68.29,  57.74) 09/18/2018   20:04:03  ( -68.32,  57.73)    2.68                11
 09/18/2018   20:54:49   (  67.70,-134.21) 09/18/2018   20:53:38  (  67.75,-135.29)   45.85                71