Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2012 4 14.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/16/2012   02:55:23   ( -68.50, -45.66) ( -68.45, -45.40)   11.97                71
 04/16/2012   03:46:05   (  68.25, 121.96) (  68.23, 121.98)    2.35                 2
 04/16/2012   04:36:46   ( -68.13, -70.56) ( -68.13, -70.51)    2.25                73
 04/18/2012   19:12:14   ( -68.33,  70.33) ( -68.31,  70.30)    1.77                54
 04/18/2012   20:02:58   (  68.19,-122.19) (  68.20,-122.19)    1.33                23
 04/18/2012   20:53:26   ( -67.36,  46.14) ( -67.43,  44.56)   67.99                69
 04/21/2012   11:29:07   ( -68.26,-173.82) ( -68.27,-173.88)    2.48                33
 04/21/2012   12:19:52   (  68.18,  -6.41) (  68.15,  -6.37)    3.32                45
 04/24/2012   02:55:26   (  68.70, 134.06) (  68.59, 134.75)   30.77                71
 04/24/2012   03:46:01   ( -68.25, -58.04) ( -68.27, -58.01)    1.91                10
 04/24/2012   04:36:45   (  68.12, 109.44) (  68.09, 109.43)    3.09                66
 04/26/2012   19:12:12   (  68.32,-109.67) (  68.34,-109.68)    2.49                59
 04/26/2012   20:02:53   ( -68.19,  57.81) ( -68.19,  57.77)    1.60                11
 04/26/2012   20:53:28   (  67.57,-134.11) (  67.62,-135.24)   48.19                71