Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 7 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)
 07/21/2017   19:12:46   ( -68.39,  70.41) 07/21/2017   19:13:36  ( -68.38,  70.42)    1.77                50
 07/21/2017   20:03:30   (  68.27,-122.12) 07/21/2017   20:03:03  (  68.26,-122.07)    2.16                27
 07/21/2017   20:53:56   ( -67.32,  46.37) 07/21/2017   20:52:48  ( -67.32,  44.49)   80.66                68
 07/24/2017   10:39:17   (  69.30,  17.63) 07/24/2017   10:40:24  (  69.17,  19.66)   81.30                67
 07/24/2017   11:29:43   ( -68.35,-173.77) 07/24/2017   11:30:07  ( -68.35,-173.73)    1.45                24
 07/24/2017   12:20:26   (  68.17,  -6.24) 07/24/2017   12:19:35  (  68.18,  -6.29)    2.56                51
 07/27/2017   02:55:58   (  68.40, 134.61) 07/27/2017   02:57:08  (  68.42, 134.59)    2.28                70
 07/27/2017   03:46:40   ( -68.30, -57.95) 07/27/2017   03:46:38  ( -68.32, -57.90)    2.87                 2
 07/27/2017   04:37:20   (  67.97, 109.78) 07/27/2017   04:36:08  (  68.03, 109.41)   17.09                72
 07/29/2017   19:12:54   (  68.36,-109.58) 07/29/2017   19:13:38  (  68.38,-109.58)    2.33                44
 07/29/2017   20:03:36   ( -68.26,  57.87) 07/29/2017   20:03:09  ( -68.23,  57.87)    3.35                27
 08/01/2017   10:39:22   ( -69.23,-162.30) 08/01/2017   10:40:30  ( -69.13,-160.42)   74.94                68
 08/01/2017   11:29:51   (  68.32,   6.23) 08/01/2017   11:30:09  (  68.34,   6.24)    1.97                18
 08/01/2017   12:20:33   ( -68.22, 173.69) 08/01/2017   12:19:40  ( -68.19, 173.69)    3.14                53