Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 6 8.  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)
 06/09/2017   02:55:58   (  68.36, 134.61) 06/09/2017   02:56:56  (  68.37, 134.58)    1.28                58
 06/09/2017   03:46:39   ( -68.25, -57.91) 06/09/2017   03:46:26  ( -68.26, -57.92)    1.22                13
 06/09/2017   04:37:13   (  67.56, 110.24) 06/09/2017   04:36:03  (  67.59, 108.95)   54.88                70
 06/11/2017   19:12:52   (  68.31,-109.55) 06/11/2017   19:13:26  (  68.33,-109.59)    2.31                34
 06/11/2017   20:03:33   ( -68.19,  57.93) 06/11/2017   20:02:56  ( -68.22,  57.92)    3.16                37
 06/14/2017   10:39:11   ( -68.88,-161.83) 06/14/2017   10:40:22  ( -68.78,-160.79)   43.03                71
 06/14/2017   11:29:46   (  68.26,   6.29) 06/14/2017   11:29:56  (  68.28,   6.24)    3.22                10
 06/14/2017   12:20:27   ( -68.19, 173.70) 06/14/2017   12:19:25  ( -68.18, 173.75)    2.26                62
 06/17/2017   02:55:56   ( -68.40, -45.42) 06/17/2017   02:56:57  ( -68.41, -45.38)    1.95                61
 06/17/2017   03:46:40   (  68.27, 122.06) 06/17/2017   03:46:25  (  68.24, 122.06)    3.41                15
 06/17/2017   04:37:13   ( -67.71, -69.92) 06/17/2017   04:36:02  ( -67.74, -70.88)   40.65                71
 06/19/2017   19:12:50   ( -68.35,  70.42) 06/19/2017   19:13:27  ( -68.36,  70.45)    1.89                37
 06/19/2017   20:03:34   (  68.22,-122.10) 06/19/2017   20:02:54  (  68.24,-122.05)    3.49                40
 06/22/2017   10:39:11   (  68.86,  18.19) 06/22/2017   10:40:21  (  68.75,  19.16)   41.19                70
 06/22/2017   11:29:44   ( -68.30,-173.74) 06/22/2017   11:29:57  ( -68.32,-173.73)    1.80                13
 06/22/2017   12:20:28   (  68.17,  -6.27) 06/22/2017   12:19:24  (  68.19,  -6.23)    2.77                64