Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 7 22.  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)
 07/24/2018   20:03:42   (  68.33,-122.24) 07/24/2018   20:04:16  (  68.33,-122.25)    0.64                34
 07/24/2018   20:54:22   ( -68.20,  45.25) 07/24/2018   20:53:45  ( -68.22,  45.26)    2.67                37
 07/27/2018   11:30:01   ( -68.82,-174.43) 07/27/2018   11:31:12  ( -68.70,-173.57)   37.62                71
 07/27/2018   12:20:38   (  68.32,  -6.46) 07/27/2018   12:20:44  (  68.30,  -6.40)    3.34                 6
 07/27/2018   13:11:18   ( -68.13, 161.10) 07/27/2018   13:10:15  ( -68.14, 161.04)    2.87                63
 07/30/2018   03:46:50   ( -68.38, -58.08) 07/30/2018   03:47:46  ( -68.39, -58.06)    0.75                56
 07/30/2018   04:37:34   (  68.26, 109.39) 07/30/2018   04:37:13  (  68.27, 109.44)    2.41                21
 07/30/2018   05:28:04   ( -67.53, -82.38) 07/30/2018   05:26:54  ( -67.55, -83.76)   58.42                70
 08/01/2018   19:13:23   (  69.43,-111.06) 08/01/2018   19:14:29  (  69.34,-108.61)   96.33                66
 08/01/2018   20:03:46   ( -68.32,  57.77) 08/01/2018   20:04:15  ( -68.35,  57.77)    3.21                29
 08/01/2018   20:54:30   (  68.20,-134.77) 08/01/2018   20:53:43  (  68.17,-134.79)    3.31                47
 08/04/2018   11:30:02   (  68.46,   6.03) 08/04/2018   11:31:13  (  68.46,   6.15)    4.93                71
 08/04/2018   12:20:43   ( -68.31, 173.55) 08/04/2018   12:20:44  ( -68.30, 173.60)    2.24                 1
 08/04/2018   13:11:24   (  68.09, -18.86) 08/04/2018   13:10:11  (  68.12, -18.97)    5.93                73