Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 5 7.  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)
 05/08/2017   02:55:58   (  68.41, 134.54) 05/08/2017   02:56:54  (  68.39, 134.60)    3.37                56
 05/08/2017   03:46:38   ( -68.22, -57.90) 05/08/2017   03:46:25  ( -68.23, -57.96)    2.89                13
 05/08/2017   04:37:11   (  67.50, 110.31) 05/08/2017   04:36:02  (  67.55, 108.90)   60.02                69
 05/10/2017   19:12:52   (  68.33,-109.58) 05/10/2017   19:13:25  (  68.30,-109.63)    3.15                33
 05/10/2017   20:03:33   ( -68.19,  57.91) 05/10/2017   20:02:55  ( -68.20,  57.88)    1.59                38
 05/13/2017   10:39:11   ( -68.85,-161.82) 05/13/2017   10:40:22  ( -68.73,-160.87)   40.45                71
 05/13/2017   11:29:47   (  68.30,   6.22) 05/13/2017   11:29:55  (  68.29,   6.23)    1.96                 8
 05/13/2017   12:20:28   ( -68.16, 173.72) 05/13/2017   12:19:25  ( -68.18, 173.74)    2.44                63
 05/16/2017   02:55:58   ( -68.40, -45.45) 05/16/2017   02:56:58  ( -68.39, -45.41)    1.79                60
 05/16/2017   03:46:42   (  68.28, 122.02) 05/16/2017   03:46:25  (  68.27, 122.09)    2.87                17
 05/16/2017   04:37:14   ( -67.66, -69.88) 05/16/2017   04:36:03  ( -67.73, -70.91)   44.42                71
 05/18/2017   19:12:51   ( -68.33,  70.43) 05/18/2017   19:13:28  ( -68.33,  70.39)    1.65                37
 05/18/2017   20:03:35   (  68.20,-122.11) 05/18/2017   20:02:55  (  68.21,-122.11)    1.15                40
 05/21/2017   10:39:12   (  68.82,  18.22) 05/21/2017   10:40:23  (  68.71,  19.10)   37.22                71
 05/21/2017   11:29:46   ( -68.30,-173.77) 05/21/2017   11:29:59  ( -68.28,-173.80)    2.87                13
 05/21/2017   12:20:30   (  68.18,  -6.31) 05/21/2017   12:19:26  (  68.16,  -6.29)    2.56                64