Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2016 4 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)
 04/21/2016   18:23:21   ( -68.51,  82.90) 04/21/2016   18:24:03  ( -68.51,  82.97)    2.67                42
 04/21/2016   19:14:04   (  68.34,-109.56) 04/21/2016   19:13:31  (  68.34,-109.59)    1.28                33
 04/24/2016   09:49:48   (  69.31,  30.27) 04/24/2016   09:50:56  (  69.16,  32.01)   70.99                68
 04/24/2016   10:40:16   ( -68.47,-161.27) 04/24/2016   10:40:37  ( -68.45,-161.24)    2.63                21
 04/24/2016   11:30:59   (  68.30,   6.26) 04/24/2016   11:30:05  (  68.28,   6.19)    3.55                54
 04/27/2016   02:06:29   (  68.52, 147.11) 04/27/2016   02:07:40  (  68.53, 147.09)    1.08                71
 04/27/2016   02:57:11   ( -68.43, -45.46) 04/27/2016   02:57:10  ( -68.43, -45.40)    2.42                 1
 04/27/2016   03:47:52   (  68.15, 122.21) 04/27/2016   03:46:39  (  68.20, 121.97)   11.52                73
 04/29/2016   18:23:23   (  68.49, -97.08) 04/29/2016   18:24:12  (  68.50, -97.08)    2.12                49
 04/29/2016   19:14:04   ( -68.34,  70.43) 04/29/2016   19:13:43  ( -68.35,  70.37)    2.83                21
 04/29/2016   20:04:32   (  67.36,-121.05) 04/29/2016   20:03:25  (  67.39,-123.09)   87.35                67
 05/02/2016   10:40:18   (  68.45,  18.73) 05/02/2016   10:40:45  (  68.47,  18.75)    2.52                27
 05/02/2016   11:30:59   ( -68.30,-173.76) 05/02/2016   11:30:16  ( -68.32,-173.80)    2.47                43