Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 8 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)
 08/30/2017   19:13:21   (  68.34,-109.64) 08/30/2017   19:13:48  (  68.37,-109.65)    2.64                27
 08/30/2017   20:04:03   ( -68.25,  57.80) 08/30/2017   20:03:18  ( -68.25,  57.84)    1.91                45
 09/02/2017   10:39:37   ( -68.62,-161.53) 09/02/2017   10:40:49  ( -68.55,-161.20)   15.34                72
 09/02/2017   11:30:18   (  68.33,   6.14) 09/02/2017   11:30:18  (  68.33,   6.18)    1.60                 0
 09/02/2017   12:20:59   ( -68.19, 173.65) 09/02/2017   12:19:49  ( -68.17, 173.61)    2.92                70
 09/05/2017   02:56:29   ( -68.39, -45.48) 09/05/2017   02:57:20  ( -68.40, -45.50)    1.66                51
 09/05/2017   03:47:13   (  68.27, 121.98) 09/05/2017   03:46:47  (  68.29, 122.01)    2.39                26
 09/05/2017   04:37:39   ( -67.32, -69.52) 09/05/2017   04:36:31  ( -67.40, -71.38)   80.24                68
 09/07/2017   18:23:00   (  69.34, -98.31) 09/07/2017   18:24:07  (  69.19, -96.27)   82.20                67
 09/07/2017   19:13:26   ( -68.39,  70.30) 09/07/2017   19:13:50  ( -68.37,  70.33)    2.69                24
 09/07/2017   20:04:09   (  68.22,-122.18) 09/07/2017   20:03:18  (  68.20,-122.23)    3.09                51
 09/10/2017   10:39:40   (  68.43,  18.69) 09/10/2017   10:40:50  (  68.43,  18.65)    1.80                70
 09/10/2017   11:30:22   ( -68.33,-173.87) 09/10/2017   11:30:20  ( -68.33,-173.84)    1.10                 2
 09/10/2017   12:21:02   (  68.00,  -6.14) 09/10/2017   12:19:50  (  68.04,  -6.53)   17.24                72
 09/13/2017   02:56:36   (  68.38, 134.53) 09/13/2017   02:57:20  (  68.38, 134.47)    2.39                44
 09/13/2017   03:47:18   ( -68.28, -58.03) 09/13/2017   03:46:50  ( -68.28, -58.02)    0.68                28