Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 10 30.  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)
 10/31/2017   02:06:16   ( -69.27, -33.99) 10/31/2017   02:07:24  ( -69.13, -32.16)   73.88                68
 10/31/2017   02:56:46   (  68.38, 134.51) 10/31/2017   02:57:02  (  68.40, 134.57)    3.25                16
 10/31/2017   03:47:27   ( -68.26, -58.01) 10/31/2017   03:46:33  ( -68.25, -57.98)    1.87                54
 11/02/2017   18:22:55   ( -68.47,  82.86) 11/02/2017   18:24:05  ( -68.49,  82.91)    3.08                70
 11/02/2017   19:13:39   (  68.34,-109.66) 11/02/2017   19:13:33  (  68.31,-109.66)    2.61                 6
 11/02/2017   20:04:18   ( -68.10,  57.96) 11/02/2017   20:03:05  ( -68.11,  57.73)    9.48                73
 11/05/2017   10:39:49   ( -68.42,-161.31) 11/05/2017   10:40:37  ( -68.44,-161.28)    2.52                48
 11/05/2017   11:30:33   (  68.29,   6.16) 11/05/2017   11:30:05  (  68.26,   6.15)    3.40                28
 11/05/2017   12:20:58   ( -67.29, 174.70) 11/05/2017   12:19:50  ( -67.33, 172.72)   85.29                68
 11/08/2017   02:06:18   (  69.37, 145.85) 11/08/2017   02:07:25  (  69.29, 148.04)   86.52                67
 11/08/2017   02:56:43   ( -68.37, -45.48) 11/08/2017   02:57:10  ( -68.37, -45.49)    0.72                27
 11/08/2017   03:47:27   (  68.25, 121.98) 11/08/2017   03:46:37  (  68.24, 122.00)    1.07                50
 11/10/2017   18:22:59   (  68.63, -97.38) 11/10/2017   18:24:10  (  68.59, -96.99)   16.51                71
 11/10/2017   19:13:37   ( -68.33,  70.34) 11/10/2017   19:13:43  ( -68.33,  70.33)    0.45                 6
 11/10/2017   20:04:21   (  68.21,-122.20) 11/10/2017   20:03:10  (  68.21,-122.17)    1.17                71