Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 4 5.  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)
 04/06/2017   02:55:51   (  68.36, 134.63) 04/06/2017   02:56:50  (  68.36, 134.59)    1.73                59
 04/06/2017   03:46:33   ( -68.27, -57.93) 04/06/2017   03:46:20  ( -68.25, -57.92)    2.48                13
 04/06/2017   04:37:05   (  67.56, 110.26) 04/06/2017   04:35:55  (  67.64, 109.02)   53.29                70
 04/08/2017   19:12:46   (  68.36,-109.60) 04/08/2017   19:13:18  (  68.34,-109.56)    2.76                32
 04/08/2017   20:03:27   ( -68.21,  57.91) 04/08/2017   20:02:48  ( -68.23,  57.95)    2.88                39
 04/11/2017   10:39:04   ( -68.79,-161.71) 04/11/2017   10:40:15  ( -68.71,-160.87)   34.86                71
 04/11/2017   11:29:41   (  68.30,   6.24) 04/11/2017   11:29:47  (  68.32,   6.30)    3.08                 6
 04/11/2017   12:20:22   ( -68.15, 173.75) 04/11/2017   12:19:18  ( -68.16, 173.74)    0.94                64
 04/14/2017   02:55:52   ( -68.36, -45.37) 04/14/2017   02:56:50  ( -68.35, -45.42)    2.26                58
 04/14/2017   03:46:36   (  68.25, 122.08) 04/14/2017   03:46:17  (  68.24, 122.09)    1.17                19
 04/14/2017   04:37:07   ( -67.55, -69.74) 04/14/2017   04:35:57  ( -67.57, -71.05)   55.57                70
 04/16/2017   19:12:47   ( -68.30,  70.47) 04/16/2017   19:13:19  ( -68.33,  70.43)    3.25                32
 04/16/2017   20:03:31   (  68.20,-122.09) 04/16/2017   20:02:46  (  68.21,-122.06)    2.15                45
 04/19/2017   10:39:04   (  68.63,  18.50) 04/19/2017   10:40:14  (  68.57,  18.98)   20.45                70
 04/19/2017   11:29:42   ( -68.30,-173.77) 04/19/2017   11:29:47  ( -68.30,-173.72)    1.87                 5
 04/19/2017   12:20:25   (  68.15,  -6.26) 04/19/2017   12:19:15  (  68.13,  -6.28)    2.16                70