Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 7 12.  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)
 07/13/2017   19:12:47   (  68.37,-109.57) 07/13/2017   19:13:30  (  68.38,-109.55)    1.45                43
 07/13/2017   20:03:28   ( -68.23,  57.92) 07/13/2017   20:03:01  ( -68.22,  57.90)    1.57                27
 07/16/2017   10:39:13   ( -69.32,-162.39) 07/16/2017   10:40:20  ( -69.25,-160.23)   85.28                67
 07/16/2017   11:29:41   (  68.34,   6.24) 07/16/2017   11:30:01  (  68.35,   6.29)    2.47                20
 07/16/2017   12:20:22   ( -68.20, 173.74) 07/16/2017   12:19:32  ( -68.20, 173.74)    0.35                50
 07/19/2017   02:55:52   ( -68.54, -45.55) 07/19/2017   02:57:03  ( -68.50, -45.31)   11.39                71
 07/19/2017   03:46:33   (  68.27, 122.12) 07/19/2017   03:46:32  (  68.26, 122.06)    2.47                 1
 07/19/2017   04:37:15   ( -68.18, -70.45) 07/19/2017   04:36:02  ( -68.17, -70.42)    1.41                73
 07/21/2017   19:12:44   ( -68.41,  70.40) 07/21/2017   19:13:35  ( -68.40,  70.45)    2.63                51
 07/21/2017   20:03:27   (  68.25,-122.08) 07/21/2017   20:03:02  (  68.27,-122.06)    3.16                25
 07/21/2017   20:53:54   ( -67.34,  46.35) 07/21/2017   20:52:46  ( -67.40,  44.57)   76.42                68
 07/24/2017   10:39:14   (  69.45,  17.43) 07/24/2017   10:40:20  (  69.33,  19.86)   96.17                66
 07/24/2017   11:29:37   ( -68.34,-173.73) 07/24/2017   11:30:06  ( -68.34,-173.74)    1.15                29
 07/24/2017   12:20:21   (  68.23,  -6.28) 07/24/2017   12:19:33  (  68.22,  -6.25)    1.80                48