Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2015 7 29.  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)
 07/30/2015   00:28:18   (  69.26, 171.48) 07/30/2015   00:29:29  (  69.13, 172.38)   38.23                71
 07/30/2015   01:18:52   ( -68.73, -20.49) 07/30/2015   01:19:04  ( -68.74, -20.48)    0.93                12
 07/30/2015   02:09:36   (  68.62, 146.97) 07/30/2015   02:08:31  (  68.63, 147.03)    2.50                65
 08/01/2015   16:45:03   (  68.84, -72.17) 08/01/2015   16:46:03  (  68.83, -72.12)    2.42                60
 08/01/2015   17:35:44   ( -68.69,  95.35) 08/01/2015   17:35:34  ( -68.67,  95.31)    2.70                10
 08/01/2015   18:26:19   (  68.10, -96.58) 08/01/2015   18:25:08  (  68.16, -97.66)   45.34                71
 08/04/2015   09:01:55   (  68.80,  43.65) 08/04/2015   09:02:32  (  68.80,  43.72)    2.85                37
 08/04/2015   09:52:36   ( -68.65,-148.83) 08/04/2015   09:52:03  ( -68.64,-148.84)    0.62                33
 08/07/2015   00:28:15   ( -69.56,  -8.94) 08/07/2015   00:29:23  ( -69.44,  -7.21)   68.61                68
 08/07/2015   01:18:45   (  68.71, 159.54) 08/07/2015   01:19:01  (  68.71, 159.49)    2.09                16
 08/07/2015   02:09:27   ( -68.61, -33.00) 08/07/2015   02:08:31  ( -68.61, -33.00)    0.56                56
 08/09/2015   16:44:54   ( -68.83, 107.84) 08/09/2015   16:46:02  ( -68.85, 107.90)    3.04                68
 08/09/2015   17:35:37   (  68.68, -84.64) 08/09/2015   17:35:30  (  68.67, -84.68)    1.76                 7
 08/09/2015   18:26:15   ( -68.36,  83.09) 08/09/2015   18:25:03  ( -68.41,  82.64)   19.35                72