Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 6 27.  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)
 06/30/2017   10:39:09   ( -68.91,-161.85) 06/30/2017   10:40:20  ( -68.80,-160.76)   45.23                71
 06/30/2017   11:29:44   (  68.29,   6.28) 06/30/2017   11:29:54  (  68.30,   6.27)    0.56                10
 06/30/2017   12:20:25   ( -68.17, 173.76) 06/30/2017   12:19:24  ( -68.19, 173.78)    3.14                61
 07/03/2017   02:55:53   ( -68.39, -45.38) 07/03/2017   02:56:55  ( -68.40, -45.38)    1.05                62
 07/03/2017   03:46:37   (  68.26, 122.10) 07/03/2017   03:46:22  (  68.28, 122.13)    2.69                15
 07/03/2017   04:37:11   ( -67.75, -69.95) 07/03/2017   04:35:59  ( -67.79, -70.82)   36.70                72
 07/05/2017   19:12:47   ( -68.35,  70.44) 07/05/2017   19:13:25  ( -68.33,  70.42)    2.82                38
 07/05/2017   20:03:31   (  68.23,-122.09) 07/05/2017   20:02:52  (  68.21,-122.08)    2.16                39
 07/08/2017   10:39:08   (  68.89,  18.19) 07/08/2017   10:40:18  (  68.74,  19.18)   42.84                70
 07/08/2017   11:29:41   ( -68.32,-173.74) 07/08/2017   11:29:54  ( -68.31,-173.72)    0.90                13
 07/08/2017   12:20:25   (  68.20,  -6.27) 07/08/2017   12:19:21  (  68.19,  -6.22)    2.38                64
 07/11/2017   02:55:53   (  68.38, 134.64) 07/11/2017   02:56:53  (  68.39, 134.63)    1.80                60
 07/11/2017   03:46:35   ( -68.29, -57.92) 07/11/2017   03:46:23  ( -68.30, -57.86)    2.95                12
 07/11/2017   04:37:08   (  67.63, 110.21) 07/11/2017   04:35:58  (  67.67, 109.06)   48.93                70