Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2013 1 26.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 01/29/2013   03:45:02   (  68.48, 121.74) (  68.39, 122.17)   20.62                72
 01/29/2013   04:35:39   ( -68.14, -70.50) ( -68.11, -70.53)    3.19                 8
 01/29/2013   05:26:23   (  68.00,  96.98) (  68.00,  96.98)    0.07                69
 01/31/2013   20:01:56   (  68.21,-122.15) (  68.22,-122.15)    0.69                49
 01/31/2013   20:52:37   ( -68.08,  45.34) ( -68.06,  45.29)    3.06                21
 01/31/2013   21:43:05   (  67.07,-146.15) (  67.10,-148.15)   86.71                67
 02/03/2013   11:28:26   ( -69.13,-174.93) ( -69.04,-172.90)   81.35                67
 02/03/2013   12:18:54   (  68.15,  -6.31) (  68.15,  -6.35)    1.66                20
 02/03/2013   13:09:36   ( -68.06, 161.11) ( -68.04, 161.16)    2.87                52
 02/06/2013   03:45:09   ( -68.26, -58.01) ( -68.24, -58.01)    2.26                66
 02/06/2013   04:35:53   (  68.13, 109.46) (  68.12, 109.50)    2.31                11
 02/06/2013   05:26:29   ( -67.72, -82.71) ( -67.79, -83.25)   24.12                73
 02/08/2013   20:02:06   ( -68.18,  57.85) ( -68.20,  57.84)    2.25                36
 02/08/2013   20:52:50   (  68.06,-134.69) (  68.08,-134.66)    2.37                41