Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 7 26.  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)
 07/27/2018   11:30:01   ( -68.82,-174.42) 07/27/2018   11:31:12  ( -68.71,-173.55)   37.37                71
 07/27/2018   12:20:37   (  68.26,  -6.38) 07/27/2018   12:20:45  (  68.27,  -6.44)    2.69                 8
 07/27/2018   13:11:19   ( -68.18, 161.04) 07/27/2018   13:10:15  ( -68.16, 161.06)    2.77                64
 07/30/2018   03:46:50   ( -68.38, -58.07) 07/30/2018   03:47:47  ( -68.36, -58.10)    2.70                57
 07/30/2018   04:37:34   (  68.25, 109.40) 07/30/2018   04:37:14  (  68.25, 109.41)    0.85                20
 07/30/2018   05:28:04   ( -67.52, -82.38) 07/30/2018   05:26:54  ( -67.58, -83.73)   57.69                70
 08/01/2018   20:03:46   ( -68.31,  57.78) 08/01/2018   20:04:16  ( -68.33,  57.75)    2.45                30
 08/01/2018   20:54:30   (  68.19,-134.76) 08/01/2018   20:53:44  (  68.17,-134.80)    3.36                46
 08/04/2018   11:30:02   (  68.51,   5.97) 08/04/2018   11:31:13  (  68.47,   6.16)    8.70                71
 08/04/2018   12:20:42   ( -68.30, 173.55) 08/04/2018   12:20:44  ( -68.31, 173.60)    1.89                 2
 08/04/2018   13:11:25   (  68.13, -18.92) 08/04/2018   13:10:12  (  68.14, -18.96)    1.73                73
 08/07/2018   03:46:57   (  68.40, 121.88) 08/07/2018   03:47:43  (  68.38, 121.93)    2.61                46
 08/07/2018   04:37:38   ( -68.24, -70.60) 08/07/2018   04:37:14  ( -68.22, -70.62)    2.61                24
 08/07/2018   05:28:04   (  67.15,  98.04) 08/07/2018   05:26:57  (  67.21,  95.87)   93.82                67
 08/09/2018   19:13:25   ( -69.30,  69.11) 08/09/2018   19:14:32  ( -69.18,  71.17)   82.25                67
 08/09/2018   20:03:53   (  68.34,-122.28) 08/09/2018   20:04:12  (  68.34,-122.23)    2.04                19