Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 9 9.  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)
 09/10/2017   10:39:40   (  68.42,  18.70) 09/10/2017   10:40:49  (  68.43,  18.65)    2.26                69
 09/10/2017   11:30:22   ( -68.34,-173.87) 09/10/2017   11:30:19  ( -68.32,-173.84)    1.83                 3
 09/10/2017   12:21:02   (  67.99,  -6.13) 09/10/2017   12:19:49  (  68.04,  -6.53)   17.70                73
 09/13/2017   02:56:37   (  68.42, 134.46) 09/13/2017   02:57:18  (  68.40, 134.49)    3.22                41
 09/13/2017   03:47:18   ( -68.28, -58.04) 09/13/2017   03:46:48  ( -68.29, -58.01)    1.49                30
 09/15/2017   18:23:00   ( -69.14,  81.96) 09/15/2017   18:24:09  ( -69.01,  83.49)   62.49                69
 09/15/2017   19:13:31   (  68.32,-109.64) 09/15/2017   19:13:46  (  68.34,-109.70)    3.05                15
 09/15/2017   20:04:13   ( -68.23,  57.79) 09/15/2017   20:03:16  ( -68.23,  57.81)    0.71                57
 09/18/2017   10:39:44   ( -68.45,-161.35) 09/18/2017   10:40:47  ( -68.43,-161.35)    2.71                63
 09/18/2017   11:30:28   (  68.33,   6.12) 09/18/2017   11:30:14  (  68.31,   6.15)    2.78                14
 09/18/2017   12:21:02   ( -67.81, 174.09) 09/18/2017   12:19:50  ( -67.87, 173.27)   34.89                72
 09/21/2017   02:56:40   ( -68.41, -45.53) 09/21/2017   02:57:15  ( -68.38, -45.52)    3.31                35
 09/21/2017   03:47:23   (  68.24, 122.00) 09/21/2017   03:46:42  (  68.26, 121.98)    2.83                41
 09/23/2017   18:22:58   (  68.68, -97.44) 09/23/2017   18:24:09  (  68.64, -96.95)   20.23                71