Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 6 12.  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)
 06/14/2017   10:39:10   ( -68.88,-161.83) 06/14/2017   10:40:21  ( -68.78,-160.79)   43.13                71
 06/14/2017   11:29:45   (  68.26,   6.30) 06/14/2017   11:29:55  (  68.28,   6.24)    3.54                10
 06/14/2017   12:20:27   ( -68.19, 173.70) 06/14/2017   12:19:25  ( -68.18, 173.75)    2.38                62
 06/17/2017   02:55:56   ( -68.40, -45.42) 06/17/2017   02:56:57  ( -68.40, -45.39)    1.49                61
 06/17/2017   03:46:40   (  68.26, 122.06) 06/17/2017   03:46:24  (  68.28, 122.12)    2.67                16
 06/17/2017   04:37:13   ( -67.71, -69.92) 06/17/2017   04:36:02  ( -67.73, -70.89)   40.84                71
 06/19/2017   19:12:50   ( -68.35,  70.42) 06/19/2017   19:13:27  ( -68.34,  70.42)    1.89                37
 06/19/2017   20:03:34   (  68.22,-122.10) 06/19/2017   20:02:54  (  68.21,-122.08)    1.07                40
 06/22/2017   10:39:10   (  68.81,  18.26) 06/22/2017   10:40:21  (  68.70,  19.11)   36.60                71
 06/22/2017   11:29:44   ( -68.31,-173.75) 06/22/2017   11:29:56  ( -68.32,-173.72)    2.29                12
 06/22/2017   12:20:28   (  68.18,  -6.28) 06/22/2017   12:19:23  (  68.20,  -6.22)    3.48                65
 06/25/2017   02:55:56   (  68.40, 134.59) 06/25/2017   02:56:54  (  68.40, 134.62)    1.46                58
 06/25/2017   03:46:37   ( -68.26, -57.92) 06/25/2017   03:46:25  ( -68.25, -57.93)    1.86                12
 06/25/2017   04:37:11   (  67.60, 110.22) 06/25/2017   04:36:01  (  67.62, 108.99)   52.25                70