Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 6 16.  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)
 06/17/2017   02:55:56   ( -68.39, -45.41) 06/17/2017   02:56:57  ( -68.41, -45.38)    2.07                61
 06/17/2017   03:46:40   (  68.25, 122.09) 06/17/2017   03:46:25  (  68.24, 122.06)    1.47                15
 06/17/2017   04:37:13   ( -67.70, -69.91) 06/17/2017   04:36:02  ( -67.74, -70.88)   41.36                71
 06/19/2017   19:12:50   ( -68.34,  70.43) 06/19/2017   19:13:27  ( -68.35,  70.43)    0.82                37
 06/19/2017   20:03:34   (  68.20,-122.08) 06/19/2017   20:02:55  (  68.18,-122.13)    3.44                39
 06/22/2017   10:39:10   (  68.85,  18.21) 06/22/2017   10:40:20  (  68.72,  19.14)   40.03                70
 06/22/2017   11:29:43   ( -68.30,-173.74) 06/22/2017   11:29:56  ( -68.29,-173.76)    1.38                13
 06/22/2017   12:20:27   (  68.16,  -6.26) 06/22/2017   12:19:23  (  68.17,  -6.26)    0.81                64
 06/25/2017   02:55:56   (  68.39, 134.60) 06/25/2017   02:56:55  (  68.38, 134.59)    1.32                59
 06/25/2017   03:46:37   ( -68.26, -57.91) 06/25/2017   03:46:25  ( -68.28, -57.89)    2.73                12
 06/25/2017   04:37:11   (  67.58, 110.24) 06/25/2017   04:36:01  (  67.65, 109.02)   52.01                70
 06/27/2017   19:12:50   (  68.35,-109.58) 06/27/2017   19:13:24  (  68.36,-109.55)    1.36                34
 06/27/2017   20:03:31   ( -68.22,  57.92) 06/27/2017   20:02:55  ( -68.21,  57.90)    0.97                36
 06/30/2017   10:39:09   ( -68.92,-161.87) 06/30/2017   10:40:19  ( -68.85,-160.71)   47.02                70
 06/30/2017   11:29:44   (  68.32,   6.24) 06/30/2017   11:29:53  (  68.34,   6.31)    3.38                 9
 06/30/2017   12:20:25   ( -68.18, 173.74) 06/30/2017   12:19:24  ( -68.19, 173.76)    1.47                61