Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2016 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)
 05/15/2016   18:23:26   (  68.52, -97.15) 05/15/2016   18:24:29  (  68.51, -97.13)    1.10                63
 05/15/2016   19:14:07   ( -68.39,  70.33) 05/15/2016   19:13:59  ( -68.40,  70.37)    2.26                 8
 05/15/2016   20:04:44   (  67.88,-121.71) 05/15/2016   20:03:33  (  67.90,-122.57)   36.32                71
 05/18/2016   10:40:19   (  68.45,  18.70) 05/18/2016   10:41:00  (  68.46,  18.69)    1.47                41
 05/18/2016   11:31:00   ( -68.32,-173.81) 05/18/2016   11:30:31  ( -68.30,-173.88)    3.43                29
 05/21/2016   02:06:44   ( -69.32, -34.02) 05/21/2016   02:07:52  ( -69.24, -32.11)   75.72                68
 05/21/2016   02:57:13   (  68.39, 134.55) 05/21/2016   02:57:32  (  68.40, 134.48)    3.03                19
 05/21/2016   03:47:55   ( -68.32, -58.03) 05/21/2016   03:47:02  ( -68.30, -58.00)    1.85                53
 05/23/2016   18:23:24   ( -68.52,  82.85) 05/23/2016   18:24:36  ( -68.50,  82.83)    1.68                72
 05/23/2016   19:14:08   (  68.39,-109.68) 05/23/2016   19:14:03  (  68.39,-109.66)    0.63                 5
 05/23/2016   20:04:48   ( -68.20,  57.88) 05/23/2016   20:03:34  ( -68.23,  57.78)    5.13                74
 05/26/2016   10:40:18   ( -68.46,-161.31) 05/26/2016   10:41:07  ( -68.48,-161.32)    1.67                49
 05/26/2016   11:31:02   (  68.34,   6.16) 05/26/2016   11:30:34  (  68.36,   6.18)    2.81                28
 05/26/2016   12:21:27   ( -67.34, 174.71) 05/26/2016   12:20:19  ( -67.42, 172.73)   85.16                68