Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2012 9 15.  Predictions up to the next  14.0 days:

     Date     Time(NPP)   NPP Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/15/2012   04:35:33   (  68.14, 109.53) (  68.17, 109.50)    3.27                 2
 09/15/2012   05:26:14   ( -68.02, -83.00) ( -68.01, -83.06)    3.03                72
 09/17/2012   20:01:43   ( -68.27,  57.83) ( -68.27,  57.85)    0.95                49
 09/17/2012   20:52:27   (  68.14,-134.70) (  68.16,-134.64)    2.97                28
 09/17/2012   21:42:52   ( -67.15,  33.83) ( -67.21,  31.92)   82.52                68
 09/20/2012   11:28:09   (  69.14,   5.12) (  69.02,   7.03)   76.98                68
 09/20/2012   12:18:35   ( -68.20, 173.69) ( -68.19, 173.64)    2.26                25
 09/20/2012   13:09:19   (  68.07, -18.84) (  68.07, -18.85)    0.44                52
 09/23/2012   03:44:48   (  68.32, 121.99) (  68.32, 122.04)    2.10                69
 09/23/2012   04:35:29   ( -68.18, -70.51) ( -68.16, -70.51)    2.53                 1
 09/23/2012   05:26:10   (  67.90,  97.15) (  67.93,  96.86)   12.74                73
 09/25/2012   20:01:41   (  68.25,-122.14) (  68.27,-122.13)    2.84                44
 09/25/2012   20:52:22   ( -68.10,  45.36) ( -68.12,  45.32)    2.28                26
 09/28/2012   11:28:06   ( -69.13,-174.86) ( -69.00,-172.98)   75.96                68
 09/28/2012   12:18:35   (  68.22,  -6.33) (  68.21,  -6.31)    0.98                18
 09/28/2012   13:09:16   ( -68.07, 161.17) ( -68.06, 161.14)    1.52                52