Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 4 29.  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)
 04/30/2017   02:55:55   ( -68.38, -45.41) 04/30/2017   02:56:54  ( -68.41, -45.38)    3.31                59
 04/30/2017   03:46:39   (  68.26, 122.05) 04/30/2017   03:46:22  (  68.24, 122.08)    1.67                17
 04/30/2017   04:37:11   ( -67.63, -69.85) 04/30/2017   04:36:00  ( -67.69, -70.94)   46.59                71
 05/02/2017   19:12:50   ( -68.34,  70.40) 05/02/2017   19:13:25  ( -68.31,  70.39)    3.42                35
 05/02/2017   20:03:34   (  68.22,-122.14) 05/02/2017   20:02:52  (  68.21,-122.09)    2.66                42
 05/05/2017   10:39:09   (  68.73,  18.35) 05/05/2017   10:40:20  (  68.65,  19.05)   29.37                71
 05/05/2017   11:29:45   ( -68.31,-173.79) 05/05/2017   11:29:54  ( -68.32,-173.72)    2.74                 9
 05/05/2017   12:20:28   (  68.14,  -6.26) 05/05/2017   12:19:22  (  68.15,  -6.28)    1.60                66
 05/08/2017   02:55:58   (  68.38, 134.58) 05/08/2017   02:56:54  (  68.36, 134.57)    1.92                56
 05/08/2017   03:46:39   ( -68.23, -57.91) 05/08/2017   03:46:24  ( -68.25, -57.92)    2.50                15
 05/08/2017   04:37:11   (  67.46, 110.35) 05/08/2017   04:36:02  (  67.52, 108.88)   62.71                69
 05/10/2017   19:12:52   (  68.35,-109.62) 05/10/2017   19:13:22  (  68.33,-109.58)    2.70                30
 05/10/2017   20:03:33   ( -68.21,  57.89) 05/10/2017   20:02:52  ( -68.23,  57.93)    3.09                41
 05/13/2017   10:39:09   ( -68.77,-161.70) 05/13/2017   10:40:20  ( -68.63,-160.97)   33.04                71
 05/13/2017   11:29:46   (  68.28,   6.25) 05/13/2017   11:29:51  (  68.29,   6.26)    1.67                 5
 05/13/2017   12:20:27   ( -68.13, 173.76) 05/13/2017   12:19:22  ( -68.14, 173.70)    2.27                65