Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 4 24.  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)
 04/27/2017   10:39:08   ( -68.82,-161.77) 04/27/2017   10:40:19  ( -68.74,-160.85)   38.21                71
 04/27/2017   11:29:44   (  68.27,   6.26) 04/27/2017   11:29:52  (  68.29,   6.26)    2.20                 8
 04/27/2017   12:20:25   ( -68.13, 173.76) 04/27/2017   12:19:23  ( -68.13, 173.70)    2.78                62
 04/30/2017   02:55:56   ( -68.41, -45.45) 04/30/2017   02:56:55  ( -68.39, -45.39)    3.14                59
 04/30/2017   03:46:39   (  68.24, 122.08) 04/30/2017   03:46:23  (  68.22, 122.05)    2.14                16
 04/30/2017   04:37:11   ( -67.61, -69.82) 04/30/2017   04:36:01  ( -67.67, -70.96)   48.67                70
 05/02/2017   19:12:50   ( -68.32,  70.43) 05/02/2017   19:13:26  ( -68.32,  70.39)    1.74                36
 05/02/2017   20:03:34   (  68.21,-122.11) 05/02/2017   20:02:53  (  68.20,-122.10)    0.94                41
 05/05/2017   10:39:10   (  68.76,  18.30) 05/05/2017   10:40:21  (  68.67,  19.07)   32.76                71
 05/05/2017   11:29:45   ( -68.29,-173.76) 05/05/2017   11:29:56  ( -68.29,-173.76)    0.30                11
 05/05/2017   12:20:29   (  68.18,  -6.31) 05/05/2017   12:19:23  (  68.17,  -6.25)    2.22                66
 05/08/2017   02:55:57   (  68.36, 134.60) 05/08/2017   02:56:55  (  68.36, 134.57)    1.66                58
 05/08/2017   03:46:39   ( -68.26, -57.95) 05/08/2017   03:46:25  ( -68.26, -57.92)    1.65                14
 05/08/2017   04:37:12   (  67.56, 110.23) 05/08/2017   04:36:02  (  67.58, 108.94)   55.10                70