Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2015 8 15.  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)
 08/15/2015   02:09:21   (  68.61, 147.00) 08/15/2015   02:08:25  (  68.62, 147.04)    1.88                56
 08/17/2015   16:44:47   (  68.79, -72.10) 08/17/2015   16:45:56  (  68.80, -72.12)    1.66                69
 08/17/2015   17:35:28   ( -68.70,  95.34) 08/17/2015   17:35:25  ( -68.70,  95.38)    1.74                 3
 08/17/2015   18:26:08   (  68.37, -96.92) 08/17/2015   18:24:55  (  68.41, -97.32)   17.21                73
 08/20/2015   09:01:38   (  68.77,  43.71) 08/20/2015   09:02:23  (  68.76,  43.72)    1.03                45
 08/20/2015   09:52:19   ( -68.63,-148.79) 08/20/2015   09:51:53  ( -68.66,-148.78)    3.36                26
 08/23/2015   00:28:03   ( -69.77,  -9.23) 08/23/2015   00:29:09  ( -69.66,  -6.87)   91.91                66
 08/23/2015   01:18:29   (  68.70, 159.58) 08/23/2015   01:18:51  (  68.71, 159.54)    1.94                22
 08/23/2015   02:09:11   ( -68.61, -32.99) 08/23/2015   02:08:21  ( -68.61, -32.95)    1.46                50
 08/25/2015   16:44:39   ( -68.90, 107.77) 08/25/2015   16:45:50  ( -68.89, 108.00)    9.76                71
 08/25/2015   17:35:21   (  68.69, -84.63) 08/25/2015   17:35:19  (  68.65, -84.64)    3.45                 2
 08/25/2015   18:26:02   ( -68.54,  82.88) 08/25/2015   18:24:49  ( -68.55,  82.87)    1.65                73
 08/28/2015   09:01:28   ( -68.79,-136.30) 08/28/2015   09:02:18  ( -68.77,-136.26)    2.80                50
 08/28/2015   09:52:11   (  68.62,  31.23) 08/28/2015   09:51:45  (  68.65,  31.24)    2.62                26
 08/28/2015   10:42:37   ( -67.67,-160.25) 08/28/2015   10:41:29  ( -67.77,-162.18)   81.92                68