Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 7 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)
 07/05/2017   20:03:31   (  68.22,-122.08) 07/05/2017   20:02:54  (  68.22,-122.08)    0.02                37
 07/08/2017   10:39:10   (  68.99,  18.06) 07/08/2017   10:40:19  (  68.87,  19.32)   52.10                69
 07/08/2017   11:29:41   ( -68.32,-173.74) 07/08/2017   11:29:57  ( -68.32,-173.72)    0.89                16
 07/08/2017   12:20:25   (  68.19,  -6.26) 07/08/2017   12:19:24  (  68.21,  -6.22)    2.85                61
 07/11/2017   02:55:53   (  68.42, 134.59) 07/11/2017   02:56:56  (  68.42, 134.63)    1.75                63
 07/11/2017   03:46:34   ( -68.28, -57.91) 07/11/2017   03:46:27  ( -68.26, -57.92)    2.01                 7
 07/11/2017   04:37:11   (  67.78, 110.03) 07/11/2017   04:36:00  (  67.81, 109.19)   35.23                71
 07/13/2017   19:12:46   (  68.33,-109.52) 07/13/2017   19:13:27  (  68.36,-109.56)    3.24                41
 07/13/2017   20:03:28   ( -68.25,  57.91) 07/13/2017   20:02:57  ( -68.26,  57.96)    2.83                31
 07/16/2017   10:39:11   ( -69.22,-162.25) 07/16/2017   10:40:19  ( -69.10,-160.42)   73.86                68
 07/16/2017   11:29:40   (  68.30,   6.29) 07/16/2017   11:29:58  (  68.31,   6.25)    1.64                18
 07/16/2017   12:20:22   ( -68.21, 173.73) 07/16/2017   12:19:28  ( -68.21, 173.77)    1.81                54
 07/19/2017   02:55:51   ( -68.44, -45.42) 07/19/2017   02:57:01  ( -68.44, -45.36)    2.31                70
 07/19/2017   03:46:34   (  68.27, 122.10) 07/19/2017   03:46:29  (  68.26, 122.07)    1.94                 5
 07/19/2017   04:37:14   ( -68.07, -70.32) 07/19/2017   04:36:00  ( -68.11, -70.47)    8.14                74