Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 6 26.  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)
 06/27/2017   19:12:50   (  68.32,-109.53) 06/27/2017   19:13:25  (  68.32,-109.58)    1.98                35
 06/27/2017   20:03:31   ( -68.20,  57.94) 06/27/2017   20:02:55  ( -68.22,  57.93)    2.65                36
 06/30/2017   10:39:09   ( -68.95,-161.91) 06/30/2017   10:40:19  ( -68.81,-160.74)   49.07                70
 06/30/2017   11:29:43   (  68.28,   6.29) 06/30/2017   11:29:53  (  68.31,   6.28)    2.50                10
 06/30/2017   12:20:24   ( -68.16, 173.77) 06/30/2017   12:19:24  ( -68.15, 173.73)    1.93                60
 07/03/2017   02:55:53   ( -68.38, -45.37) 07/03/2017   02:56:55  ( -68.41, -45.36)    3.20                62
 07/03/2017   03:46:37   (  68.25, 122.11) 07/03/2017   03:46:23  (  68.23, 122.07)    2.53                14
 07/03/2017   04:37:11   ( -67.74, -69.94) 07/03/2017   04:35:59  ( -67.80, -70.80)   36.97                72
 07/05/2017   19:12:47   ( -68.34,  70.45) 07/05/2017   19:13:25  ( -68.34,  70.43)    1.42                38
 07/05/2017   20:03:31   (  68.22,-122.08) 07/05/2017   20:02:52  (  68.21,-122.07)    0.86                39
 07/08/2017   10:39:08   (  68.88,  18.20) 07/08/2017   10:40:18  (  68.74,  19.18)   42.37                70
 07/08/2017   11:29:41   ( -68.31,-173.73) 07/08/2017   11:29:54  ( -68.32,-173.71)    0.76                13
 07/08/2017   12:20:25   (  68.19,  -6.27) 07/08/2017   12:19:21  (  68.19,  -6.22)    2.04                64