Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2015 5 25.  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)
 05/26/2015   23:38:18   ( -69.67,   3.64) 05/26/2015   23:39:27  ( -69.56,   5.41)   69.80                69
 05/27/2015   00:28:49   (  68.84, 172.11) 05/27/2015   00:29:05  (  68.85, 172.13)    1.56                16
 05/27/2015   01:19:30   ( -68.72, -20.41) 05/27/2015   01:18:35  ( -68.74, -20.38)    2.31                55
 05/29/2015   15:54:58   ( -68.89, 120.50) 05/29/2015   15:56:08  ( -68.91, 120.44)    3.12                70
 05/29/2015   16:45:43   (  68.81, -72.09) 05/29/2015   16:45:35  (  68.80, -72.05)    1.52                 8
 05/29/2015   17:36:20   ( -68.47,  95.68) 05/29/2015   17:35:08  ( -68.53,  95.24)   19.18                72
 06/01/2015   08:11:51   ( -68.86,-123.69) 06/01/2015   08:12:37  ( -68.85,-123.76)    2.93                46
 06/01/2015   09:02:35   (  68.73,  43.79) 06/01/2015   09:02:04  (  68.74,  43.75)    2.01                31
 06/03/2015   23:38:17   (  69.66,-176.37) 06/03/2015   23:39:25  (  69.54,-174.61)   69.58                68
 06/04/2015   00:28:45   ( -68.83,  -7.89) 06/04/2015   00:29:06  ( -68.83,  -7.91)    0.86                21
 06/04/2015   01:19:29   (  68.70, 159.59) 06/04/2015   01:18:33  (  68.71, 159.60)    1.01                56
 06/06/2015   15:54:57   (  68.89, -59.53) 06/06/2015   15:56:05  (  68.89, -59.58)    2.02                68
 06/06/2015   16:45:39   ( -68.81, 107.91) 06/06/2015   16:45:35  ( -68.79, 107.93)    2.36                 4
 06/06/2015   17:36:18   (  68.41, -84.27) 06/06/2015   17:35:06  (  68.45, -84.85)   23.88                72