Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2012 12 23.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/25/2012   12:18:36   ( -68.19, 173.68) ( -68.19, 173.71)    0.95                34
 12/25/2012   13:09:20   (  68.05, -18.83) (  68.02, -18.84)    2.69                42
 12/28/2012   03:44:57   (  68.72, 121.44) (  68.65, 122.50)   43.37                70
 12/28/2012   04:35:30   ( -68.16, -70.51) ( -68.16, -70.46)    2.17                14
 12/28/2012   05:26:13   (  67.97,  97.04) (  67.99,  96.99)    3.05                61
 12/30/2012   20:01:42   (  68.22,-122.12) (  68.23,-122.16)    1.76                67
 12/30/2012   20:52:23   ( -68.09,  45.36) ( -68.08,  45.30)    2.78                 3
 12/30/2012   21:43:03   (  67.74,-146.90) (  67.79,-147.39)   21.40                73
 01/02/2013   12:18:35   (  68.20,  -6.33) (  68.19,  -6.34)    1.02                49
 01/02/2013   13:09:16   ( -68.07, 161.16) ( -68.05, 161.12)    3.14                21
 01/02/2013   13:59:44   (  67.07, -30.33) (  67.14, -32.26)   83.88                68
 01/05/2013   04:35:29   (  68.19, 109.47) (  68.16, 109.47)    3.22                32
 01/05/2013   05:26:10   ( -68.06, -83.05) ( -68.07, -83.00)    2.50                39