Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 2 11.  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)
 02/12/2018   02:55:55   ( -68.39, -45.43) 02/12/2018   02:56:57  ( -68.40, -45.36)    2.87                62
 02/12/2018   03:46:39   (  68.25, 122.06) 02/12/2018   03:46:25  (  68.22, 122.08)    3.11                14
 02/12/2018   04:37:13   ( -67.75, -70.00) 02/12/2018   04:36:01  ( -67.79, -70.80)   33.89                72
 02/14/2018   19:12:47   ( -68.33,  70.43) 02/14/2018   19:13:27  ( -68.32,  70.43)    0.51                40
 02/14/2018   20:03:31   (  68.19,-122.09) 02/14/2018   20:02:54  (  68.20,-122.07)    1.35                37
 02/17/2018   10:39:08   (  68.93,  18.09) 02/17/2018   10:40:18  (  68.83,  19.30)   49.92                70
 02/17/2018   11:29:39   ( -68.27,-173.71) 02/17/2018   11:29:56  ( -68.29,-173.73)    2.34                17
 02/17/2018   12:20:23   (  68.13,  -6.24) 02/17/2018   12:19:23  (  68.16,  -6.23)    3.16                60
 02/20/2018   02:55:50   (  68.39, 134.58) 02/20/2018   02:56:53  (  68.38, 134.64)    2.39                63
 02/20/2018   03:46:31   ( -68.26, -57.93) 02/20/2018   03:46:24  ( -68.24, -57.91)    3.15                 7
 02/20/2018   04:37:08   (  67.76, 110.01) 02/20/2018   04:35:56  (  67.83, 109.26)   32.81                72
 02/22/2018   19:12:42   (  68.34,-109.57) 02/22/2018   19:13:22  (  68.31,-109.57)    3.01                40
 02/22/2018   20:03:23   ( -68.21,  57.92) 02/22/2018   20:02:52  ( -68.22,  57.96)    2.34                31