Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 8 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)
 08/12/2018   11:30:05   ( -68.40,-173.90) 08/12/2018   11:31:14  ( -68.40,-173.92)    0.60                69
 08/12/2018   12:20:49   (  68.28,  -6.44) 08/12/2018   12:20:41  (  68.30,  -6.40)    2.07                 8
 08/12/2018   13:11:27   ( -67.98, 161.27) 08/12/2018   13:10:14  ( -68.02, 160.90)   15.77                73
 08/15/2018   03:47:00   ( -68.35, -58.06) 08/15/2018   03:47:42  ( -68.37, -58.07)    2.54                42
 08/15/2018   04:37:44   (  68.23, 109.40) 08/15/2018   04:37:10  (  68.20, 109.37)    3.14                34
 08/17/2018   19:13:24   (  68.93,-110.38) 08/17/2018   19:14:34  (  68.83,-109.25)   46.44                70
 08/17/2018   20:03:57   ( -68.34,  57.71) 08/17/2018   20:04:11  ( -68.34,  57.77)    2.56                14
 08/17/2018   20:54:40   (  68.18,-134.77) 08/17/2018   20:53:39  (  68.17,-134.79)    1.39                61
 08/20/2018   11:30:11   (  68.39,   6.09) 08/20/2018   11:31:10  (  68.41,   6.10)    1.68                59
 08/20/2018   12:20:53   ( -68.29, 173.55) 08/20/2018   12:20:40  ( -68.30, 173.61)    2.91                13
 08/20/2018   13:11:26   (  67.59, -18.27) 08/20/2018   13:10:16  (  67.68, -19.47)   51.92                70
 08/23/2018   03:47:07   (  68.34, 121.93) 08/23/2018   03:47:39  (  68.37, 121.94)    3.33                32
 08/23/2018   04:37:49   ( -68.24, -70.62) 08/23/2018   04:37:10  ( -68.21, -70.62)    2.53                39