Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2015 1 21.  Predictions up to the next  14.0 days:

     Date     Time(NPP) NPP Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 01/21/2015   14:15:45   ( -69.16, 145.53) 01/21/2015   14:16:48  ( -69.15, 145.47)    2.69                63
 01/21/2015   15:06:29   (  69.02, -46.98) 01/21/2015   15:06:15  (  69.04, -47.03)    3.04                14
 01/21/2015   15:57:03   ( -68.53, 121.00) 01/21/2015   15:55:52  ( -68.54, 119.98)   41.39                71
 01/24/2015   06:32:34   ( -69.13, -98.65) 01/24/2015   06:33:17  ( -69.14, -98.66)    1.53                43
 01/24/2015   07:23:19   (  69.05,  68.77) 01/24/2015   07:22:44  (  69.03,  68.84)    3.54                35
 01/26/2015   21:58:55   (  69.97,-151.41) 01/26/2015   22:00:03  (  69.88,-149.42)   76.43                68
 01/26/2015   22:49:22   ( -69.10,  17.16) 01/26/2015   22:49:45  ( -69.11,  17.18)    1.39                23
 01/26/2015   23:40:06   (  68.97,-175.35) 01/26/2015   23:39:12  (  69.00,-175.32)    3.02                54
 01/29/2015   14:15:31   (  69.26, -34.60) 01/29/2015   14:16:43  (  69.22, -34.43)    8.20                72
 01/29/2015   15:06:11   ( -69.08, 132.97) 01/29/2015   15:06:14  ( -69.06, 133.00)    2.30                 3
 01/29/2015   15:56:54   (  68.90, -59.47) 01/29/2015   15:55:42  (  68.89, -59.58)    4.39                72
 02/01/2015   06:32:18   (  69.15,  81.35) 02/01/2015   06:33:12  (  69.15,  81.36)    0.23                54
 02/01/2015   07:22:59   ( -69.01,-111.15) 02/01/2015   07:22:43  ( -68.99,-111.21)    3.19                16
 02/01/2015   08:13:30   (  68.19,  57.24) 02/01/2015   08:12:21  (  68.26,  55.53)   70.91                69
 02/03/2015   22:49:06   (  69.08,-162.78) 02/03/2015   22:49:40  (  69.11,-162.81)    2.64                34
 02/03/2015   23:39:48   ( -69.00,   4.65) 02/03/2015   23:39:10  ( -69.01,   4.70)    2.30                38