Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 7 10.  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)
 07/11/2017   02:55:53   (  68.41, 134.60) 07/11/2017   02:56:59  (  68.38, 134.59)    3.49                66
 07/11/2017   03:46:34   ( -68.28, -57.91) 07/11/2017   03:46:29  ( -68.28, -57.90)    0.70                 5
 07/11/2017   04:37:12   (  67.83, 109.97) 07/11/2017   04:36:01  (  67.89, 109.28)   29.40                71
 07/13/2017   19:12:47   (  68.39,-109.59) 07/13/2017   19:13:30  (  68.39,-109.53)    2.33                43
 07/13/2017   20:03:28   ( -68.25,  57.90) 07/13/2017   20:03:01  ( -68.23,  57.91)    2.28                27
 07/16/2017   10:39:14   ( -69.38,-162.48) 07/16/2017   10:40:20  ( -69.28,-160.17)   91.24                66
 07/16/2017   11:29:40   (  68.30,   6.29) 07/16/2017   11:30:02  (  68.34,   6.28)    3.48                22
 07/16/2017   12:20:21   ( -68.16, 173.79) 07/16/2017   12:19:33  ( -68.18, 173.73)    3.31                48
 07/19/2017   02:55:53   ( -68.56, -45.57) 07/19/2017   02:57:05  ( -68.52, -45.27)   12.70                72
 07/19/2017   03:46:34   (  68.28, 122.10) 07/19/2017   03:46:34  (  68.29, 122.09)    1.17                 0
 07/19/2017   04:37:15   ( -68.13, -70.40) 07/19/2017   04:36:05  ( -68.14, -70.45)    2.39                70
 07/21/2017   19:12:43   ( -68.37,  70.45) 07/21/2017   19:13:38  ( -68.37,  70.42)    1.61                55
 07/21/2017   20:03:27   (  68.26,-122.10) 07/21/2017   20:03:05  (  68.25,-122.08)    0.99                22
 07/21/2017   20:53:56   ( -67.46,  46.21) 07/21/2017   20:52:47  ( -67.49,  44.67)   65.81                69
 07/24/2017   11:29:37   ( -68.34,-173.74) 07/24/2017   11:30:10  ( -68.34,-173.76)    1.01                33
 07/24/2017   12:20:21   (  68.23,  -6.29) 07/24/2017   12:19:37  (  68.21,  -6.26)    2.97                44