Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2011 12 25.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/26/2011   02:56:07   ( -68.41, -45.43) ( -68.41, -45.50)    2.82                36
 12/26/2011   03:46:52   (  68.32, 121.99) (  68.31, 122.01)    1.53                42
 12/28/2011   18:22:26   (  69.02, -97.79) (  68.88, -96.67)   47.02                70
 12/28/2011   19:12:57   ( -68.37,  70.40) ( -68.38,  70.34)    2.63                16
 12/28/2011   20:03:42   (  68.28,-122.18) (  68.27,-122.14)    1.67                62
 12/31/2011   10:39:07   (  68.51,  18.68) (  68.49,  18.72)    2.19                65
 12/31/2011   11:29:47   ( -68.34,-173.78) ( -68.33,-173.84)    2.59                 4
 12/31/2011   12:20:26   (  67.92,  -5.95) (  67.99,  -6.60)   27.93                72
 01/03/2012   02:55:56   (  68.42, 134.57) (  68.41, 134.51)    2.96                46
 01/03/2012   03:46:37   ( -68.31, -57.96) ( -68.31, -57.98)    1.24                25
 01/03/2012   04:37:03   (  67.19, 110.71) (  67.24, 108.43)   98.18                67
 01/05/2012   18:22:20   ( -69.54,  81.51) ( -69.42,  84.03)   99.17                66
 01/05/2012   19:12:45   (  68.40,-109.62) (  68.42,-109.60)    2.15                24
 01/05/2012   20:03:26   ( -68.28,  57.86) ( -68.26,  57.85)    1.64                46