Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 9 28.  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)
 09/29/2017   02:56:46   (  68.39, 134.49) 09/29/2017   02:57:14  (  68.41, 134.50)    2.95                28
 09/29/2017   03:47:27   ( -68.26, -58.03) 09/29/2017   03:46:45  ( -68.25, -58.06)    1.40                42
 10/01/2017   18:23:02   ( -68.70,  82.53) 10/01/2017   18:24:13  ( -68.65,  83.02)   20.88                71
 10/01/2017   19:13:42   (  68.35,-109.70) 10/01/2017   19:13:43  (  68.36,-109.68)    1.58                 1
 10/01/2017   20:04:23   ( -68.23,  57.78) 10/01/2017   20:03:14  ( -68.21,  57.77)    2.27                69
 10/04/2017   10:39:53   ( -68.46,-161.37) 10/04/2017   10:40:44  ( -68.43,-161.36)    3.00                51
 10/04/2017   11:30:37   (  68.32,   6.11) 10/04/2017   11:30:11  (  68.31,   6.14)    1.84                26
 10/04/2017   12:21:03   ( -67.39, 174.59) 10/04/2017   12:19:55  ( -67.43, 172.75)   78.50                68
 10/07/2017   02:06:22   (  69.31, 145.92) 10/07/2017   02:07:30  (  69.20, 147.85)   77.25                68
 10/07/2017   02:56:48   ( -68.37, -45.50) 10/07/2017   02:57:13  ( -68.38, -45.55)    2.09                25
 10/07/2017   03:47:32   (  68.24, 121.98) 10/07/2017   03:46:40  (  68.26, 121.95)    1.94                52
 10/09/2017   18:23:03   (  68.48, -97.19) 10/09/2017   18:24:11  (  68.47, -97.18)    1.09                68
 10/09/2017   19:13:44   ( -68.35,  70.31) 10/09/2017   19:13:41  ( -68.37,  70.33)    3.10                 3
 10/09/2017   20:04:24   (  68.00,-121.94) 10/09/2017   20:03:12  (  68.03,-122.43)   20.54                72
 10/12/2017   10:39:58   (  68.41,  18.68) 10/12/2017   10:40:40  (  68.41,  18.62)    2.32                42
 10/12/2017   11:30:40   ( -68.32,-173.89) 10/12/2017   11:30:10  ( -68.31,-173.86)    1.86                30