Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 3 11.  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)
 03/13/2018   10:39:11   ( -69.36,-162.50) 03/13/2018   10:40:18  ( -69.23,-160.19)   92.15                67
 03/13/2018   11:29:37   (  68.27,   6.28) 03/13/2018   11:30:00  (  68.28,   6.27)    1.80                23
 03/13/2018   12:20:18   ( -68.14, 173.77) 03/13/2018   12:19:31  ( -68.13, 173.72)    2.19                47
 03/16/2018   02:55:51   ( -68.49, -45.54) 03/16/2018   02:57:02  ( -68.43, -45.32)   10.86                71
 03/16/2018   03:46:33   (  68.25, 122.08) 03/16/2018   03:46:30  (  68.25, 122.11)    1.42                 3
 03/16/2018   04:37:14   ( -68.11, -70.44) 03/16/2018   04:36:01  ( -68.10, -70.44)    1.64                73
 03/18/2018   19:12:44   ( -68.36,  70.39) 03/18/2018   19:13:32  ( -68.33,  70.44)    3.19                48
 03/18/2018   20:03:27   (  68.18,-122.07) 03/18/2018   20:03:00  (  68.15,-122.13)    3.50                27
 03/18/2018   20:53:52   ( -67.18,  46.47) 03/18/2018   20:52:45  ( -67.22,  44.44)   87.47                67
 03/21/2018   10:39:12   (  69.18,  17.74) 03/21/2018   10:40:20  (  69.05,  19.58)   74.43                68
 03/21/2018   11:29:39   ( -68.28,-173.75) 03/21/2018   11:30:02  ( -68.29,-173.73)    0.58                23
 03/21/2018   12:20:23   (  68.16,  -6.28) 03/21/2018   12:19:29  (  68.16,  -6.24)    1.94                54
 03/24/2018   02:55:53   (  68.36, 134.60) 03/24/2018   02:57:01  (  68.38, 134.63)    2.51                68
 03/24/2018   03:46:34   ( -68.21, -57.89) 03/24/2018   03:46:32  ( -68.23, -57.92)    2.44                 2
 03/24/2018   04:37:14   (  67.88, 109.84) 03/24/2018   04:36:02  (  67.94, 109.38)   20.12                72