Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 7 28.  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)
 07/29/2017   19:12:55   (  68.38,-109.60) 07/29/2017   19:13:39  (  68.37,-109.60)    1.19                44
 07/29/2017   20:03:36   ( -68.24,  57.90) 07/29/2017   20:03:10  ( -68.21,  57.84)    3.45                26
 08/01/2017   10:39:23   ( -69.26,-162.34) 08/01/2017   10:40:31  ( -69.11,-160.45)   76.76                68
 08/01/2017   11:29:52   (  68.35,   6.20) 08/01/2017   11:30:10  (  68.33,   6.22)    2.07                18
 08/01/2017   12:20:33   ( -68.20, 173.71) 08/01/2017   12:19:41  ( -68.18, 173.67)    3.06                52
 08/04/2017   02:56:04   ( -68.43, -45.45) 08/04/2017   02:57:13  ( -68.41, -45.46)    2.72                69
 08/04/2017   03:46:47   (  68.26, 122.08) 08/04/2017   03:46:40  (  68.29, 122.04)    2.94                 7
 08/04/2017   04:37:26   ( -68.00, -70.28) 08/04/2017   04:36:13  ( -68.02, -70.64)   15.18                73
 08/06/2017   19:13:00   ( -68.34,  70.43) 08/06/2017   19:13:44  ( -68.36,  70.36)    3.27                44
 08/06/2017   20:03:44   (  68.23,-122.12) 08/06/2017   20:03:11  (  68.24,-122.14)    0.80                33
 08/09/2017   10:39:26   (  69.01,  17.98) 08/09/2017   10:40:36  (  68.90,  19.28)   52.95                70
 08/09/2017   11:29:57   ( -68.31,-173.77) 08/09/2017   11:30:15  ( -68.31,-173.83)    2.50                18
 08/09/2017   12:20:41   (  68.21,  -6.33) 08/09/2017   12:19:42  (  68.19,  -6.33)    2.42                59