Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 4 14.  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)
 04/16/2017   19:12:47   ( -68.36,  70.40) 04/16/2017   19:13:21  ( -68.36,  70.46)    2.42                34
 04/16/2017   20:03:30   (  68.19,-122.08) 04/16/2017   20:02:49  (  68.20,-122.09)    1.33                41
 04/19/2017   10:39:09   (  68.89,  18.15) 04/19/2017   10:40:19  (  68.76,  19.18)   43.74                70
 04/19/2017   11:29:42   ( -68.31,-173.77) 04/19/2017   11:29:55  ( -68.32,-173.73)    2.56                13
 04/19/2017   12:20:25   (  68.14,  -6.25) 04/19/2017   12:19:23  (  68.16,  -6.28)    2.49                62
 04/22/2017   02:55:55   (  68.36, 134.61) 04/22/2017   02:57:01  (  68.38, 134.56)    3.05                66
 04/22/2017   03:46:37   ( -68.26, -57.94) 04/22/2017   03:46:31  ( -68.28, -57.93)    2.21                 6
 04/22/2017   04:37:15   (  67.82, 109.92) 04/22/2017   04:36:03  (  67.89, 109.26)   28.39                72
 04/24/2017   19:12:51   (  68.37,-109.63) 04/24/2017   19:13:38  (  68.38,-109.59)    1.87                47
 04/24/2017   20:03:32   ( -68.21,  57.89) 04/24/2017   20:03:09  ( -68.23,  57.86)    1.68                23
 04/24/2017   20:53:59   (  67.19,-133.55) 04/24/2017   20:52:52  (  67.22,-135.65)   90.46                67
 04/27/2017   11:29:45   (  68.33,   6.19) 04/27/2017   11:30:17  (  68.32,   6.17)    1.74                32
 04/27/2017   12:20:27   ( -68.23, 173.64) 04/27/2017   12:19:47  ( -68.22, 173.69)    2.29                40