Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2013 5 14.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 05/15/2013   19:12:43   (  68.25,-109.72) (  68.23,-109.74)    1.84                34
 05/15/2013   20:03:24   ( -68.13,  57.75) ( -68.13,  57.77)    1.40                37
 05/18/2013   10:39:00   ( -68.67,-161.81) ( -68.54,-161.11)   31.64                71
 05/18/2013   11:29:38   (  68.21,   6.11) (  68.20,   6.12)    0.72                 4
 05/18/2013   12:20:19   ( -68.09, 173.58) ( -68.10, 173.63)    2.44                67
 05/21/2013   02:55:48   ( -68.26, -45.49) ( -68.27, -45.54)    2.96                52
 05/21/2013   03:46:33   (  68.17, 121.93) (  68.15, 121.96)    2.28                26
 05/21/2013   04:36:59   ( -67.24, -69.61) ( -67.27, -71.41)   77.66                68
 05/23/2013   18:22:15   (  69.04, -98.08) (  68.92, -96.47)   65.46                69
 05/23/2013   19:12:43   ( -68.22,  70.34) ( -68.21,  70.28)    2.62                22
 05/23/2013   20:03:27   (  68.08,-122.18) (  68.08,-122.22)    1.71                55
 05/26/2013   10:38:56   (  68.32,  18.67) (  68.33,  18.70)    1.56                61
 05/26/2013   11:29:37   ( -68.19,-173.85) ( -68.17,-173.85)    1.51                 9
 05/26/2013   12:20:13   (  67.62,  -5.84) (  67.65,  -6.81)   41.47                71