Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2011 12 17.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/18/2011   02:05:52   ( -69.26, -33.92) ( -69.16, -32.19)   69.18                68
 12/18/2011   02:56:23   (  68.42, 134.51) (  68.39, 134.49)    3.13                16
 12/18/2011   03:47:04   ( -68.31, -58.02) ( -68.28, -58.01)    3.11                55
 12/20/2011   18:22:29   ( -68.57,  82.80) ( -68.53,  82.88)    5.53                72
 12/20/2011   19:13:12   (  68.37,-109.64) (  68.37,-109.67)    1.20                 3
 12/20/2011   20:03:52   ( -68.20,  57.89) ( -68.20,  57.77)    5.21                72
 12/23/2011   10:39:18   ( -68.47,-161.29) ( -68.48,-161.30)    1.50                54
 12/23/2011   11:30:02   (  68.33,   6.20) (  68.31,   6.14)    2.51                22
 12/23/2011   12:20:30   ( -67.51, 174.53) ( -67.59, 172.94)   68.08                69
 12/26/2011   02:56:08   ( -68.43, -45.46) ( -68.41, -45.51)    3.08                35
 12/26/2011   03:46:52   (  68.29, 122.03) (  68.29, 122.00)    1.40                42
 12/28/2011   18:22:26   (  68.99, -97.75) (  68.85, -96.71)   44.49                70
 12/28/2011   19:12:58   ( -68.39,  70.37) ( -68.42,  70.38)    3.18                14
 12/28/2011   20:03:42   (  68.25,-122.15) (  68.25,-122.18)    1.61                62