Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 10 16.  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)
 10/17/2017   18:22:57   ( -68.49,  82.85) 10/17/2017   18:24:06  ( -68.50,  82.86)    0.41                69
 10/17/2017   19:13:41   (  68.36,-109.66) 10/17/2017   19:13:34  (  68.33,-109.69)    2.98                 7
 10/17/2017   20:04:19   ( -68.07,  58.02) 10/17/2017   20:03:06  ( -68.11,  57.67)   15.09                73
 10/20/2017   10:39:52   ( -68.48,-161.37) 10/20/2017   10:40:34  ( -68.46,-161.30)    3.44                42
 10/20/2017   11:30:35   (  68.29,   6.19) 10/20/2017   11:30:02  (  68.30,   6.14)    1.74                33
 10/23/2017   02:06:14   (  69.09, 146.27) 10/23/2017   02:07:23  (  68.98, 147.59)   54.01                69
 10/23/2017   02:56:45   ( -68.42, -45.52) 10/23/2017   02:57:01  ( -68.43, -45.46)    2.68                16
 10/23/2017   03:47:28   (  68.23, 122.03) 10/23/2017   03:46:29  (  68.26, 121.98)    3.15                59
 10/25/2017   18:22:58   (  68.49, -97.17) 10/25/2017   18:23:59  (  68.49, -97.13)    1.47                61
 10/25/2017   19:13:39   ( -68.36,  70.33) 10/25/2017   19:13:30  ( -68.33,  70.31)    2.81                 9
 10/25/2017   20:04:15   (  67.80,-121.66) 10/25/2017   20:03:04  (  67.82,-122.65)   41.44                71
 10/28/2017   10:39:52   (  68.44,  18.67) 10/28/2017   10:40:27  (  68.44,  18.70)    1.26                35
 10/28/2017   11:30:33   ( -68.30,-173.83) 10/28/2017   11:29:58  ( -68.29,-173.86)    1.32                35