Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 6 10.  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)
 06/11/2017   19:12:52   (  68.32,-109.55) 06/11/2017   19:13:26  (  68.32,-109.59)    1.81                34
 06/11/2017   20:03:33   ( -68.20,  57.92) 06/11/2017   20:02:56  ( -68.22,  57.92)    2.78                37
 06/14/2017   10:39:12   ( -68.94,-161.91) 06/14/2017   10:40:22  ( -68.79,-160.78)   48.27                70
 06/14/2017   11:29:46   (  68.27,   6.29) 06/14/2017   11:29:56  (  68.28,   6.24)    2.60                10
 06/14/2017   12:20:28   ( -68.20, 173.69) 06/14/2017   12:19:26  ( -68.18, 173.76)    2.93                62
 06/17/2017   02:55:55   ( -68.36, -45.36) 06/17/2017   02:56:58  ( -68.36, -45.43)    2.95                63
 06/17/2017   03:46:39   (  68.22, 122.12) 06/17/2017   03:46:25  (  68.24, 122.07)    3.25                14
 06/17/2017   04:37:13   ( -67.72, -69.93) 06/17/2017   04:36:02  ( -67.76, -70.86)   39.56                71
 06/19/2017   19:12:50   ( -68.36,  70.41) 06/19/2017   19:13:27  ( -68.38,  70.47)    3.57                37
 06/19/2017   20:03:34   (  68.23,-122.12) 06/19/2017   20:02:55  (  68.20,-122.10)    3.16                39
 06/22/2017   10:39:11   (  68.88,  18.18) 06/22/2017   10:40:21  (  68.77,  19.19)   42.66                70
 06/22/2017   11:29:44   ( -68.31,-173.76) 06/22/2017   11:29:58  ( -68.29,-173.76)    3.03                14
 06/22/2017   12:20:28   (  68.19,  -6.29) 06/22/2017   12:19:25  (  68.16,  -6.27)    3.02                63