Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2013 4 14.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/16/2013   11:29:25   (  68.25,   6.04) (  68.25,   6.05)    0.90                48
 04/16/2013   12:20:06   ( -68.12, 173.52) ( -68.14, 173.55)    2.85                23
 04/16/2013   13:10:33   (  67.06, -17.88) (  67.14, -19.94)   89.58                67
 04/19/2013   02:55:54   ( -69.24, -46.84) ( -69.10, -44.66)   87.47                67
 04/19/2013   03:46:21   (  68.20, 121.87) (  68.21, 121.88)    0.91                21
 04/19/2013   04:37:02   ( -68.07, -70.65) ( -68.10, -70.61)    3.35                50
 04/21/2013   19:12:32   ( -68.30,  70.21) ( -68.31,  70.24)    2.31                70
 04/21/2013   20:03:16   (  68.16,-122.30) (  68.14,-122.32)    2.03                 6
 04/21/2013   20:53:55   ( -67.92,  45.31) ( -67.98,  45.13)    9.94                74
 04/24/2013   11:29:28   ( -68.26,-173.97) ( -68.23,-173.97)    3.26                43
 04/24/2013   12:20:12   (  68.12,  -6.49) (  68.11,  -6.47)    1.78                34
 04/27/2013   02:55:52   (  68.84, 133.71) (  68.73, 134.89)   49.19                69
 04/27/2013   03:46:23   ( -68.18, -58.09) ( -68.18, -58.14)    2.12                16
 04/27/2013   04:37:07   (  68.04, 109.39) (  68.06, 109.36)    2.32                61