Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 9 25.  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)
 09/26/2017   10:39:50   (  68.43,  18.66) 09/26/2017   10:40:46  (  68.41,  18.61)    3.40                56
 09/26/2017   11:30:31   ( -68.30,-173.85) 09/26/2017   11:30:16  ( -68.30,-173.88)    1.05                15
 09/26/2017   12:21:03   (  67.52,  -5.57) 09/26/2017   12:19:54  (  67.57,  -7.08)   64.61                69
 09/29/2017   02:56:46   (  68.39, 134.48) 09/29/2017   02:57:15  (  68.37, 134.45)    2.97                29
 09/29/2017   03:47:27   ( -68.26, -58.03) 09/29/2017   03:46:45  ( -68.27, -58.04)    0.69                42
 10/01/2017   18:23:02   ( -68.70,  82.53) 10/01/2017   18:24:14  ( -68.62,  82.98)   20.81                72
 10/01/2017   19:13:42   (  68.36,-109.71) 10/01/2017   19:13:44  (  68.33,-109.72)    3.22                 2
 10/01/2017   20:04:23   ( -68.23,  57.78) 10/01/2017   20:03:14  ( -68.23,  57.80)    0.84                69
 10/04/2017   10:39:53   ( -68.46,-161.37) 10/04/2017   10:40:44  ( -68.47,-161.32)    2.51                51
 10/04/2017   11:30:36   (  68.27,   6.17) 10/04/2017   11:30:12  (  68.29,   6.11)    2.97                24
 10/04/2017   12:21:04   ( -67.44, 174.52) 10/04/2017   12:19:55  ( -67.47, 172.79)   73.81                69
 10/07/2017   02:06:23   (  69.37, 145.83) 10/07/2017   02:07:30  (  69.25, 147.91)   82.65                67
 10/07/2017   02:56:48   ( -68.37, -45.50) 10/07/2017   02:57:14  ( -68.37, -45.56)    2.51                26
 10/07/2017   03:47:32   (  68.25, 121.98) 10/07/2017   03:46:41  (  68.25, 121.94)    1.47                51