Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2016 12 11.  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)
 12/12/2016   10:39:53   (  68.39,  18.69) 12/12/2016   10:40:33  (  68.36,  18.65)    2.67                40
 12/12/2016   11:30:34   ( -68.23,-173.80) 12/12/2016   11:30:03  ( -68.25,-173.85)    2.75                31
 12/15/2016   02:06:16   ( -69.16, -33.89) 12/15/2016   02:07:25  ( -69.02, -32.30)   64.83                69
 12/15/2016   02:56:47   (  68.35, 134.50) 12/15/2016   02:57:02  (  68.36, 134.52)    1.05                15
 12/15/2016   03:47:28   ( -68.20, -57.99) 12/15/2016   03:46:33  ( -68.19, -58.04)    2.66                55
 12/17/2016   18:22:56   ( -68.43,  82.86) 12/17/2016   18:24:03  ( -68.45,  82.87)    2.25                67
 12/17/2016   19:13:39   (  68.27,-109.63) 12/17/2016   19:13:31  (  68.29,-109.68)    2.79                 8
 12/17/2016   20:04:17   ( -67.95,  58.09) 12/17/2016   20:03:04  ( -68.01,  57.63)   20.37                73
 12/20/2016   10:39:50   ( -68.40,-161.33) 12/20/2016   10:40:33  ( -68.38,-161.33)    2.71                43
 12/20/2016   11:30:33   (  68.25,   6.18) 12/20/2016   11:30:00  (  68.27,   6.18)    2.54                33
 12/23/2016   02:06:14   (  69.13, 146.15) 12/23/2016   02:07:22  (  69.02, 147.71)   63.27                68
 12/23/2016   02:56:44   ( -68.38, -45.53) 12/23/2016   02:57:02  ( -68.36, -45.48)    3.16                18
 12/23/2016   03:47:27   (  68.22, 121.98) 12/23/2016   03:46:29  (  68.25, 122.03)    3.43                58