Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 12 1.  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)
 12/02/2017   02:06:10   ( -69.36, -34.16) 12/02/2017   02:07:17  ( -69.24, -31.96)   87.48                67
 12/02/2017   02:56:37   (  68.33, 134.54) 12/02/2017   02:56:58  (  68.35, 134.57)    2.23                21
 12/02/2017   03:47:18   ( -68.19, -57.96) 12/02/2017   03:46:29  ( -68.19, -57.99)    1.46                49
 12/04/2017   18:22:48   ( -68.49,  82.80) 12/04/2017   18:23:59  ( -68.45,  82.93)    7.19                71
 12/04/2017   19:13:30   (  68.27,-109.60) 12/04/2017   19:13:27  (  68.28,-109.63)    1.46                 3
 12/04/2017   20:04:11   ( -68.12,  57.90) 12/04/2017   20:02:58  ( -68.12,  57.81)    3.66                73
 12/07/2017   10:39:40   ( -68.37,-161.27) 12/07/2017   10:40:28  ( -68.36,-161.28)    0.71                48
 12/07/2017   11:30:24   (  68.26,   6.18) 12/07/2017   11:29:55  (  68.25,   6.22)    2.09                29
 12/07/2017   12:20:48   ( -67.19, 174.80) 12/07/2017   12:19:41  ( -67.25, 172.71)   90.11                67
 12/10/2017   02:06:05   (  69.21, 146.06) 12/10/2017   02:07:13  (  69.09, 147.88)   73.49                68
 12/10/2017   02:56:32   ( -68.30, -45.41) 12/10/2017   02:56:55  ( -68.32, -45.44)    2.41                23
 12/10/2017   03:47:16   (  68.19, 122.03) 12/10/2017   03:46:22  (  68.20, 122.06)    1.42                54
 12/12/2017   18:22:44   (  68.40, -97.08) 12/12/2017   18:23:52  (  68.42, -97.06)    2.89                68
 12/12/2017   19:13:26   ( -68.29,  70.37) 12/12/2017   19:13:23  ( -68.26,  70.38)    3.10                 3
 12/12/2017   20:04:05   (  67.92,-121.85) 12/12/2017   20:02:53  (  67.97,-122.32)   20.62                72