Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 6 19.  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)
 06/19/2017   19:12:50   ( -68.36,  70.41) 06/19/2017   19:13:27  ( -68.34,  70.42)    1.89                37
 06/19/2017   20:03:34   (  68.21,-122.09) 06/19/2017   20:02:54  (  68.22,-122.08)    1.44                40
 06/22/2017   10:39:10   (  68.81,  18.27) 06/22/2017   10:40:21  (  68.71,  19.12)   35.72                71
 06/22/2017   11:29:44   ( -68.31,-173.75) 06/22/2017   11:29:56  ( -68.33,-173.72)    2.67                12
 06/22/2017   12:20:28   (  68.17,  -6.27) 06/22/2017   12:19:24  (  68.16,  -6.28)    1.66                64
 06/25/2017   02:55:56   (  68.39, 134.60) 06/25/2017   02:56:54  (  68.41, 134.63)    2.50                58
 06/25/2017   03:46:37   ( -68.26, -57.92) 06/25/2017   03:46:25  ( -68.26, -57.92)    0.84                12
 06/25/2017   04:37:11   (  67.59, 110.23) 06/25/2017   04:36:01  (  67.63, 108.99)   52.63                70
 06/27/2017   19:12:50   (  68.35,-109.57) 06/27/2017   19:13:24  (  68.33,-109.59)    2.80                34
 06/27/2017   20:03:31   ( -68.22,  57.91) 06/27/2017   20:02:54  ( -68.23,  57.93)    1.34                37
 06/30/2017   10:39:09   ( -68.92,-161.86) 06/30/2017   10:40:19  ( -68.80,-160.77)   45.60                70
 06/30/2017   11:29:44   (  68.31,   6.25) 06/30/2017   11:29:53  (  68.29,   6.25)    2.43                 9
 06/30/2017   12:20:25   ( -68.18, 173.74) 06/30/2017   12:19:23  ( -68.20, 173.77)    2.42                62
 07/03/2017   02:55:54   ( -68.40, -45.39) 07/03/2017   02:56:55  ( -68.37, -45.42)    2.83                61
 07/03/2017   03:46:38   (  68.28, 122.07) 07/03/2017   03:46:22  (  68.25, 122.08)    3.19                16
 07/03/2017   04:37:10   ( -67.65, -69.83) 07/03/2017   04:36:00  ( -67.71, -70.92)   46.58                70