Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2015 10 20.  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)
 10/20/2015   16:44:00   (  69.43, -72.93) 10/20/2015   16:45:09  (  69.33, -71.33)   63.71                69
 10/20/2015   17:34:29   ( -68.66,  95.44) 10/20/2015   17:34:49  ( -68.67,  95.45)    1.09                20
 10/20/2015   18:25:13   (  68.53, -97.08) 10/20/2015   18:24:17  (  68.51, -97.10)    2.70                56
 10/23/2015   09:00:41   (  68.77,  43.75) 10/23/2015   09:01:50  (  68.77,  43.81)    2.39                69
 10/23/2015   09:51:22   ( -68.64,-148.75) 10/23/2015   09:51:21  ( -68.61,-148.76)    3.31                 1
 10/23/2015   10:42:03   (  68.35,  18.93) 10/23/2015   10:40:50  (  68.38,  18.62)   13.45                73
 10/26/2015   01:17:33   (  68.70, 159.61) 10/26/2015   01:18:22  (  68.68, 159.57)    2.50                49
 10/26/2015   02:08:14   ( -68.56, -32.89) 10/26/2015   02:07:52  ( -68.58, -32.92)    2.48                22
 10/26/2015   02:58:41   (  67.52, 135.72) 10/26/2015   02:57:35  (  67.57, 133.54)   93.02                66
 10/28/2015   17:34:26   (  68.69, -84.60) 10/28/2015   17:34:52  (  68.69, -84.54)    2.47                26
 10/28/2015   18:25:07   ( -68.54,  82.90) 10/28/2015   18:24:23  ( -68.53,  82.90)    0.92                44
 10/31/2015   09:00:40   ( -69.11,-136.71) 10/31/2015   09:01:51  ( -68.97,-135.97)   33.69                71
 10/31/2015   09:51:17   (  68.62,  31.25) 10/31/2015   09:51:22  (  68.63,  31.25)    0.27                 5
 10/31/2015   10:41:58   ( -68.48,-161.24) 10/31/2015   10:40:53  ( -68.47,-161.30)    2.57                65
 11/03/2015   01:17:26   ( -68.73, -20.43) 11/03/2015   01:18:25  ( -68.72, -20.40)    1.26                59
 11/03/2015   02:08:09   (  68.57, 147.09) 11/03/2015   02:07:53  (  68.55, 147.03)    3.54                16
 11/03/2015   02:58:41   ( -67.93, -44.78) 11/03/2015   02:57:31  ( -68.00, -45.99)   51.05                70