Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2013 4 26.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/27/2013   02:55:53   (  68.86, 133.69) (  68.74, 134.91)   50.61                69
 04/27/2013   03:46:24   ( -68.20, -58.13) ( -68.18, -58.14)    2.52                16
 04/27/2013   04:37:08   (  68.05, 109.37) (  68.07, 109.38)    1.89                61
 04/29/2013   19:12:38   (  68.29,-109.78) (  68.26,-109.79)    3.28                59
 04/29/2013   20:03:19   ( -68.17,  57.69) ( -68.15,  57.71)    2.27                12
 04/29/2013   20:53:53   (  67.48,-134.15) (  67.53,-135.36)   51.45                70
 05/02/2013   11:29:33   (  68.21,   6.09) (  68.21,   6.04)    2.36                32
 05/02/2013   12:20:14   ( -68.09, 173.57) ( -68.11, 173.55)    2.55                39
 05/05/2013   02:55:50   ( -68.59, -45.95) ( -68.50, -45.38)   25.52                72
 05/05/2013   03:46:29   (  68.18, 121.89) (  68.21, 121.92)    3.22                 3
 05/05/2013   04:37:10   ( -68.06, -70.63) ( -68.05, -70.63)    0.90                67
 05/07/2013   19:12:40   ( -68.25,  70.27) ( -68.26,  70.23)    2.10                53
 05/07/2013   20:03:24   (  68.11,-122.24) (  68.14,-122.27)    3.29                24
 05/07/2013   20:53:52   ( -67.29,  46.09) ( -67.32,  44.42)   71.43                69
 05/10/2013   10:39:09   (  69.17,  17.49) (  69.06,  19.48)   79.67                67
 05/10/2013   11:29:35   ( -68.24,-173.94) ( -68.24,-173.90)    1.49                24
 05/10/2013   12:20:19   (  68.10,  -6.46) (  68.12,  -6.41)    2.66                53