Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 5 14.  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)
 05/16/2017   02:55:57   ( -68.39, -45.43) 05/16/2017   02:56:56  ( -68.36, -45.42)    3.11                59
 05/16/2017   03:46:41   (  68.26, 122.05) 05/16/2017   03:46:23  (  68.25, 122.09)    1.94                18
 05/16/2017   04:37:12   ( -67.59, -69.80) 05/16/2017   04:36:02  ( -67.64, -70.99)   50.55                70
 05/18/2017   19:12:51   ( -68.32,  70.44) 05/18/2017   19:13:26  ( -68.31,  70.40)    1.83                35
 05/18/2017   20:03:35   (  68.19,-122.09) 05/18/2017   20:02:53  (  68.20,-122.09)    1.54                42
 05/21/2017   10:39:10   (  68.70,  18.39) 05/21/2017   10:40:22  (  68.58,  18.97)   27.16                72
 05/21/2017   11:29:46   ( -68.30,-173.77) 05/21/2017   11:29:55  ( -68.31,-173.72)    2.35                 9
 05/21/2017   12:20:30   (  68.17,  -6.29) 05/21/2017   12:19:23  (  68.14,  -6.28)    3.17                67
 05/24/2017   02:55:59   (  68.36, 134.60) 05/24/2017   02:56:55  (  68.35, 134.58)    1.56                56
 05/24/2017   03:46:40   ( -68.23, -57.91) 05/24/2017   03:46:25  ( -68.25, -57.91)    2.71                15
 05/24/2017   04:37:12   (  67.45, 110.36) 05/24/2017   04:36:03  (  67.52, 108.88)   63.43                69
 05/26/2017   19:12:53   (  68.35,-109.61) 05/26/2017   19:13:23  (  68.34,-109.55)    2.53                30
 05/26/2017   20:03:34   ( -68.22,  57.88) 05/26/2017   20:02:54  ( -68.19,  57.89)    2.79                40