Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 7 25.  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   ( -68.84,-174.45) 07/27/2018   11:31:12  ( -68.71,-173.55)   38.83                71
 07/27/2018   12:20:37   (  68.28,  -6.40) 07/27/2018   12:20:45  (  68.26,  -6.45)    2.60                 8
 07/27/2018   13:11:18   ( -68.15, 161.09) 07/27/2018   13:10:15  ( -68.16, 161.06)    1.83                63
 07/30/2018   03:46:50   ( -68.40, -58.10) 07/30/2018   03:47:47  ( -68.39, -58.07)    1.71                57
 07/30/2018   04:37:34   (  68.27, 109.37) 07/30/2018   04:37:14  (  68.27, 109.44)    2.66                20
 07/30/2018   05:28:04   ( -67.54, -82.40) 07/30/2018   05:26:54  ( -67.61, -83.70)   55.69                70
 08/01/2018   20:03:46   ( -68.33,  57.75) 08/01/2018   20:04:17  ( -68.35,  57.76)    1.96                31
 08/01/2018   20:54:30   (  68.21,-134.78) 08/01/2018   20:53:44  (  68.23,-134.73)    3.35                46
 08/04/2018   11:30:04   (  68.58,   5.88) 08/04/2018   11:31:15  (  68.54,   6.23)   15.17                71
 08/04/2018   12:20:42   ( -68.27, 173.60) 08/04/2018   12:20:48  ( -68.27, 173.54)    2.46                 6
 08/04/2018   13:11:26   (  68.15, -18.94) 08/04/2018   13:10:15  (  68.15, -18.96)    0.52                71
 08/07/2018   03:46:56   (  68.36, 121.93) 08/07/2018   03:47:47  (  68.35, 121.88)    2.24                51
 08/07/2018   04:37:38   ( -68.26, -70.63) 08/07/2018   04:37:17  ( -68.25, -70.61)    1.29                21
 08/07/2018   05:28:06   (  67.28,  97.89) 08/07/2018   05:26:58  (  67.35,  96.00)   81.09                68