Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2013 4 22.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/24/2013   11:29:28   ( -68.26,-173.97) ( -68.25,-173.95)    1.50                43
 04/24/2013   12:20:12   (  68.11,  -6.48) (  68.14,  -6.43)    3.23                34
 04/27/2013   02:55:52   (  68.82, 133.74) (  68.73, 134.90)   47.83                70
 04/27/2013   03:46:23   ( -68.16, -58.08) ( -68.18, -58.14)    3.16                17
 04/27/2013   04:37:08   (  68.07, 109.34) (  68.07, 109.37)    1.44                61
 04/29/2013   19:12:38   (  68.25,-109.74) (  68.26,-109.79)    2.42                60
 04/29/2013   20:03:20   ( -68.18,  57.67) ( -68.16,  57.72)    3.24                12
 04/29/2013   20:53:54   (  67.50,-134.18) (  67.54,-135.35)   50.01                70
 05/02/2013   11:29:33   (  68.22,   6.07) (  68.23,   6.06)    1.26                32
 05/02/2013   12:20:14   ( -68.10, 173.55) ( -68.08, 173.51)    2.76                38
 05/05/2013   02:55:51   ( -68.66, -46.03) ( -68.54, -45.33)   31.49                71
 05/05/2013   03:46:29   (  68.20, 121.87) (  68.20, 121.90)    1.41                 4
 05/05/2013   04:37:10   ( -68.07, -70.65) ( -68.04, -70.65)    3.26                66