Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2012 12 8.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/09/2012   11:28:15   (  69.18,   5.01) (  69.05,   7.15)   86.11                67
 12/09/2012   12:18:39   ( -68.14, 173.72) ( -68.16, 173.68)    2.72                27
 12/09/2012   13:09:23   (  68.01, -18.81) (  68.00, -18.87)    2.75                49
 12/12/2012   03:44:54   (  68.32, 121.94) (  68.32, 122.13)    7.82                70
 12/12/2012   04:35:33   ( -68.08, -70.44) ( -68.10, -70.50)    3.47                 3
 12/12/2012   05:26:17   (  67.95,  97.03) (  67.94,  96.95)    4.09                73
 12/14/2012   20:01:47   (  68.21,-122.15) (  68.20,-122.14)    1.89                48
 12/14/2012   20:52:28   ( -68.08,  45.34) ( -68.09,  45.37)    1.70                23
 12/14/2012   21:42:55   (  67.03,-146.09) (  67.08,-148.13)   88.86                67
 12/17/2012   11:28:14   ( -69.24,-175.06) ( -69.12,-172.76)   92.20                67
 12/17/2012   12:18:40   (  68.15,  -6.30) (  68.17,  -6.29)    1.98                23
 12/17/2012   13:09:21   ( -68.02, 161.19) ( -68.01, 161.16)    1.42                47
 12/20/2012   03:44:52   ( -68.33, -58.06) ( -68.31, -57.88)    7.47                72
 12/20/2012   04:35:34   (  68.09, 109.55) (  68.08, 109.49)    2.90                 1
 12/20/2012   05:26:15   ( -67.96, -82.96) ( -67.98, -83.00)    2.82                72