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   (  68.35,-122.27) 07/24/2018   20:04:15  (  68.36,-122.21)    2.31                33
 07/24/2018   20:54:23   ( -68.22,  45.22) 07/24/2018   20:53:46  ( -68.20,  45.23)    2.29                37
 07/27/2018   11:30:01   ( -68.79,-174.39) 07/27/2018   11:31:12  ( -68.73,-173.53)   35.21                71
 07/27/2018   12:20:38   (  68.29,  -6.42) 07/27/2018   12:20:45  (  68.28,  -6.43)    1.64                 7
 07/27/2018   13:11:19   ( -68.15, 161.08) 07/27/2018   13:10:15  ( -68.17, 161.08)    2.43                64
 07/30/2018   03:46:49   ( -68.35, -58.04) 07/30/2018   03:47:46  ( -68.36, -58.10)    2.71                57
 07/30/2018   04:37:33   (  68.23, 109.43) 07/30/2018   04:37:13  (  68.24, 109.40)    1.70                20
 07/30/2018   05:28:03   ( -67.49, -82.34) 07/30/2018   05:26:53  ( -67.58, -83.73)   59.61                70
 08/01/2018   19:13:23   (  69.45,-111.09) 08/01/2018   19:14:29  (  69.31,-108.66)   96.67                66
 08/01/2018   20:03:46   ( -68.34,  57.74) 08/01/2018   20:04:15  ( -68.32,  57.73)    2.49                29
 08/01/2018   20:54:30   (  68.22,-134.80) 08/01/2018   20:53:42  (  68.20,-134.77)    3.02                48
 08/04/2018   11:30:02   (  68.48,   6.00) 08/04/2018   11:31:12  (  68.48,   6.18)    7.09                70
 08/04/2018   12:20:42   ( -68.28, 173.59) 08/04/2018   12:20:44  ( -68.27, 173.55)    1.71                 2
 08/04/2018   13:11:24   (  68.06, -18.82) 08/04/2018   13:10:12  (  68.09, -19.01)    8.74                72