Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2011 12 23.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/23/2011   10:39:18   ( -68.45,-161.27) ( -68.47,-161.31)    2.55                55
 12/23/2011   11:30:03   (  68.36,   6.16) (  68.37,   6.21)    2.33                23
 12/23/2011   12:20:31   ( -67.55, 174.48) ( -67.59, 172.93)   65.96                69
 12/26/2011   02:56:07   ( -68.41, -45.43) ( -68.41, -45.50)    2.78                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, -97.78) (  68.88, -96.67)   46.83                70
 12/28/2011   19:12:57   ( -68.37,  70.40) ( -68.39,  70.35)    3.04                16
 12/28/2011   20:03:42   (  68.28,-122.18) (  68.28,-122.14)    1.47                62
 12/31/2011   10:39:07   (  68.50,  18.69) (  68.50,  18.73)    1.58                65
 12/31/2011   11:29:47   ( -68.33,-173.77) ( -68.34,-173.83)    2.69                 4
 12/31/2011   12:20:26   (  67.92,  -5.94) (  68.00,  -6.59)   28.35                72
 01/03/2012   02:55:56   (  68.41, 134.58) (  68.42, 134.52)    2.86                46
 01/03/2012   03:46:38   ( -68.35, -58.01) ( -68.32, -57.97)    3.22                26
 01/05/2012   18:22:20   ( -69.53,  81.54) ( -69.44,  84.06)   98.83                66
 01/05/2012   19:12:45   (  68.38,-109.59) (  68.38,-109.64)    2.01                25
 01/05/2012   20:03:26   ( -68.26,  57.88) ( -68.28,  57.87)    2.75                46