Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 3 6.  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)
 03/08/2018   02:55:47   (  68.42, 134.56) 03/08/2018   02:56:58  (  68.43, 134.70)    6.00                71
 03/08/2018   03:46:27   ( -68.24, -57.89) 03/08/2018   03:46:30  ( -68.22, -57.93)    3.03                 3
 03/08/2018   04:37:10   (  68.05, 109.66) 03/08/2018   04:35:58  (  68.04, 109.52)    5.89                72
 03/10/2018   19:12:42   (  68.34,-109.58) 03/10/2018   19:13:29  (  68.34,-109.53)    2.06                47
 03/10/2018   20:03:23   ( -68.21,  57.91) 03/10/2018   20:03:00  ( -68.19,  57.92)    2.79                23
 03/10/2018   20:53:50   (  67.16,-133.50) 03/10/2018   20:52:43  (  67.17,-135.59)   90.42                67
 03/13/2018   10:39:11   ( -69.35,-162.49) 03/13/2018   10:40:17  ( -69.25,-160.15)   92.67                66
 03/13/2018   11:29:37   (  68.27,   6.29) 03/13/2018   11:30:00  (  68.24,   6.24)    3.14                23
 03/13/2018   12:20:18   ( -68.13, 173.78) 03/13/2018   12:19:30  ( -68.15, 173.75)    2.03                48
 03/16/2018   02:55:50   ( -68.42, -45.46) 03/16/2018   02:57:01  ( -68.42, -45.31)    5.98                71
 03/16/2018   03:46:33   (  68.25, 122.08) 03/16/2018   03:46:29  (  68.25, 122.12)    1.81                 4
 03/16/2018   04:37:13   ( -68.05, -70.36) 03/16/2018   04:36:00  ( -68.09, -70.43)    5.53                73
 03/18/2018   19:12:43   ( -68.30,  70.47) 03/18/2018   19:13:31  ( -68.31,  70.43)    2.32                48
 03/18/2018   20:03:27   (  68.17,-122.06) 03/18/2018   20:02:58  (  68.19,-122.07)    1.26                29
 03/18/2018   20:53:51   ( -67.11,  46.54) 03/18/2018   20:52:44  ( -67.19,  44.43)   91.54                67