Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2016 10 20.  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)
 10/20/2016   03:47:32   (  68.28, 122.02) 10/20/2016   03:46:27  (  68.28, 122.07)    2.19                65
 10/22/2016   18:23:01   (  68.45, -97.07) 10/22/2016   18:23:58  (  68.48, -97.09)    3.20                57
 10/22/2016   19:13:42   ( -68.32,  70.42) 10/22/2016   19:13:29  ( -68.32,  70.35)    2.58                13
 10/22/2016   20:04:15   (  67.59,-121.37) 10/22/2016   20:03:06  (  67.64,-122.79)   60.56                69
 10/25/2016   10:39:55   (  68.42,  18.74) 10/25/2016   10:40:25  (  68.44,  18.75)    2.66                30
 10/25/2016   11:30:36   ( -68.29,-173.77) 10/25/2016   11:29:56  ( -68.28,-173.80)    1.38                40
 10/28/2016   02:06:11   ( -68.78, -33.28) 10/28/2016   02:07:23  ( -68.67, -32.72)   25.56                72
 10/28/2016   02:56:50   (  68.39, 134.54) 10/28/2016   02:56:53  (  68.39, 134.57)    1.11                 3
 10/28/2016   03:47:31   ( -68.25, -57.96) 10/28/2016   03:46:24  ( -68.23, -57.98)    2.28                67
 10/30/2016   18:23:00   ( -68.43,  82.95) 10/30/2016   18:23:54  ( -68.44,  82.88)    3.11                54
 10/30/2016   19:13:44   (  68.31,-109.59) 10/30/2016   19:13:21  (  68.31,-109.63)    1.92                23
 10/30/2016   20:04:12   ( -67.46,  58.77) 10/30/2016   20:03:03  ( -67.55,  57.11)   71.01                69
 11/02/2016   09:49:30   (  69.40,  30.07) 11/02/2016   09:50:37  (  69.29,  32.20)   84.68                67
 11/02/2016   10:39:55   ( -68.40,-161.25) 11/02/2016   10:40:21  ( -68.41,-161.27)    1.39                26
 11/02/2016   11:30:39   (  68.28,   6.20) 11/02/2016   11:29:48  (  68.28,   6.22)    0.75                51