Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 2 23.  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)
 02/25/2017   02:56:11   ( -68.37, -45.46) 02/25/2017   02:56:46  ( -68.36, -45.46)    2.06                35
 02/25/2017   03:46:55   (  68.24, 122.03) 02/25/2017   03:46:13  (  68.24, 122.05)    1.05                42
 02/27/2017   18:22:30   (  68.86, -97.64) 02/27/2017   18:23:40  (  68.75, -96.73)   38.37                70
 02/27/2017   19:13:03   ( -68.30,  70.42) 02/27/2017   19:13:16  ( -68.31,  70.37)    2.77                13
 02/27/2017   20:03:48   (  68.22,-122.17) 02/27/2017   20:02:43  (  68.20,-122.12)    3.28                65
 03/02/2017   10:39:15   (  68.41,  18.73) 03/02/2017   10:40:15  (  68.43,  18.75)    1.96                60
 03/02/2017   11:29:56   ( -68.28,-173.78) 03/02/2017   11:29:46  ( -68.27,-173.80)    1.07                10
 03/02/2017   12:20:31   (  67.66,  -5.70) 03/02/2017   12:19:21  (  67.70,  -6.82)   47.43                70
 03/05/2017   02:56:07   (  68.39, 134.53) 03/05/2017   02:56:44  (  68.38, 134.58)    2.40                37
 03/05/2017   03:46:48   ( -68.26, -57.97) 03/05/2017   03:46:15  ( -68.23, -57.97)    2.83                33
 03/07/2017   18:22:28   ( -69.14,  82.00) 03/07/2017   18:23:37  ( -69.02,  83.60)   64.84                69
 03/07/2017   19:12:59   (  68.33,-109.61) 03/07/2017   19:13:14  (  68.34,-109.60)    0.89                15
 03/07/2017   20:03:40   ( -68.18,  57.90) 03/07/2017   20:02:45  ( -68.19,  57.85)    1.77                55