Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 10 8.  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)
 10/10/2018   02:56:44   ( -68.45, -45.55) 10/10/2018   02:57:51  ( -68.43, -45.61)    3.29                67
 10/10/2018   03:47:28   (  68.32, 121.93) 10/10/2018   03:47:18  (  68.31, 121.89)    1.95                10
 10/10/2018   04:38:04   ( -67.92, -70.24) 10/10/2018   04:36:52  ( -67.99, -70.86)   26.95                72
 10/12/2018   19:13:39   ( -68.41,  70.28) 10/12/2018   19:14:19  ( -68.39,  70.23)    2.84                40
 10/12/2018   20:04:23   (  68.28,-122.25) 10/12/2018   20:03:46  (  68.27,-122.28)    2.04                37
 10/15/2018   10:40:00   (  68.89,  18.09) 10/15/2018   10:41:11  (  68.78,  18.95)   36.81                71
 10/15/2018   11:30:34   ( -68.38,-173.91) 10/15/2018   11:30:47  ( -68.35,-173.94)    3.23                13
 10/15/2018   12:21:18   (  68.25,  -6.44) 10/15/2018   12:20:14  (  68.22,  -6.45)    3.34                64
 10/18/2018   02:56:47   (  68.44, 134.47) 10/18/2018   02:57:44  (  68.45, 134.44)    2.12                57
 10/18/2018   03:47:29   ( -68.35, -58.10) 10/18/2018   03:47:14  ( -68.36, -58.04)    2.80                15
 10/18/2018   04:38:01   (  67.58, 110.17) 10/18/2018   04:36:52  (  67.61, 108.74)   61.11                69
 10/20/2018   19:13:41   (  68.42,-109.73) 10/20/2018   19:14:11  (  68.40,-109.74)    1.87                30
 10/20/2018   20:04:22   ( -68.28,  57.77) 10/20/2018   20:03:42  ( -68.26,  57.72)    2.76                40