Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 2 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)
 02/06/2018   19:12:55   (  68.34,-109.61) 02/06/2018   19:13:26  (  68.32,-109.57)    2.57                31
 02/06/2018   20:03:35   ( -68.16,  57.94) 02/06/2018   20:02:57  ( -68.16,  57.87)    2.60                38
 02/09/2018   10:39:12   ( -68.89,-161.87) 02/09/2018   10:40:22  ( -68.78,-160.77)   45.86                70
 02/09/2018   11:29:47   (  68.27,   6.25) 02/09/2018   11:29:56  (  68.28,   6.26)    0.70                 9
 02/09/2018   12:20:28   ( -68.15, 173.73) 02/09/2018   12:19:27  ( -68.12, 173.71)    3.15                61
 02/12/2018   02:55:54   ( -68.35, -45.37) 02/12/2018   02:56:58  ( -68.36, -45.41)    2.08                64
 02/12/2018   03:46:38   (  68.21, 122.11) 02/12/2018   03:46:25  (  68.24, 122.09)    2.59                13
 02/12/2018   04:37:13   ( -67.76, -70.01) 02/12/2018   04:36:01  ( -67.80, -70.79)   32.84                72
 02/14/2018   19:12:47   ( -68.34,  70.42) 02/14/2018   19:13:28  ( -68.31,  70.41)    2.78                41
 02/14/2018   20:03:31   (  68.21,-122.11) 02/14/2018   20:02:55  (  68.19,-122.09)    2.28                36
 02/17/2018   10:39:09   (  69.01,  17.99) 02/17/2018   10:40:18  (  68.92,  19.41)   57.52                69
 02/17/2018   11:29:39   ( -68.28,-173.73) 02/17/2018   11:29:58  ( -68.27,-173.76)    1.66                19
 02/17/2018   12:20:23   (  68.15,  -6.26) 02/17/2018   12:19:25  (  68.15,  -6.26)    1.06                58
 02/20/2018   02:55:50   (  68.36, 134.62) 02/20/2018   02:56:57  (  68.37, 134.61)    1.19                67