Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2015 4 30.  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)
 04/30/2015   07:21:26   (  69.66,  67.97) 04/30/2015   07:22:35  (  69.56,  69.61)   64.91                69
 04/30/2015   08:11:55   ( -68.90,-123.64) 04/30/2015   08:12:15  ( -68.90,-123.62)    0.78                20
 04/30/2015   09:02:38   (  68.77,  43.84) 04/30/2015   09:01:41  (  68.79,  43.90)    3.32                57
 05/02/2015   23:38:05   (  69.14,-175.51) 05/02/2015   23:39:16  (  69.07,-175.16)   15.84                71
 05/03/2015   00:28:43   ( -68.86,  -7.80) 05/03/2015   00:28:48  ( -68.86,  -7.81)    0.44                 5
 05/03/2015   01:19:27   (  68.73, 159.68) 05/03/2015   01:18:15  (  68.75, 159.70)    2.37                72
 05/05/2015   15:54:51   (  68.95, -59.46) 05/05/2015   15:55:51  (  68.95, -59.46)    0.18                60
 05/05/2015   16:45:32   ( -68.82, 108.04) 05/05/2015   16:45:21  ( -68.85, 108.05)    3.39                11
 05/05/2015   17:36:07   (  68.21, -83.86) 05/05/2015   17:34:57  (  68.24, -85.06)   49.55                70
 05/08/2015   08:11:40   (  68.92,  56.36) 05/08/2015   08:12:24  (  68.92,  56.37)    0.46                44
 05/08/2015   09:02:21   ( -68.79,-136.14) 05/08/2015   09:01:54  ( -68.82,-136.12)    3.31                27
 05/11/2015   00:28:29   (  68.90, 172.18) 05/11/2015   00:28:56  (  68.92, 172.24)    3.12                27
 05/11/2015   01:19:09   ( -68.77, -20.32) 05/11/2015   01:18:26  ( -68.77, -20.32)    0.12                43
 05/13/2015   15:54:43   ( -69.53, 119.77) 05/13/2015   15:55:53  ( -69.40, 121.09)   53.59                70
 05/13/2015   16:45:16   (  68.83, -71.94) 05/13/2015   16:45:28  (  68.84, -71.99)    2.09                12
 05/13/2015   17:35:58   ( -68.75,  95.49) 05/13/2015   17:34:58  ( -68.74,  95.52)    1.62                60