Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 11 21.  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)
 11/21/2018   18:22:57   ( -68.96,  82.20) 11/21/2018   18:24:07  ( -68.86,  83.35)   47.53                70
 11/21/2018   19:13:32   (  68.35,-109.67) 11/21/2018   19:13:41  (  68.36,-109.61)    2.86                 9
 11/21/2018   20:04:13   ( -68.22,  57.81) 11/21/2018   20:03:12  ( -68.19,  57.82)    3.08                61
 11/24/2018   10:39:42   ( -68.41,-161.30) 11/24/2018   10:40:41  ( -68.43,-161.28)    2.21                59
 11/24/2018   11:30:26   (  68.28,   6.18) 11/24/2018   11:30:09  (  68.26,   6.16)    2.04                17
 11/24/2018   12:20:58   ( -67.67, 174.26) 11/24/2018   12:19:47  ( -67.71, 173.15)   47.37                71
 11/27/2018   02:56:36   ( -68.35, -45.45) 11/27/2018   02:57:09  ( -68.34, -45.50)    2.39                33
 11/27/2018   03:47:20   (  68.22, 122.02) 11/27/2018   03:46:36  (  68.22, 122.01)    0.65                44
 11/29/2018   18:22:51   (  68.59, -97.31) 11/29/2018   18:24:03  (  68.52, -97.02)   14.06                72
 11/29/2018   19:13:29   ( -68.29,  70.40) 11/29/2018   19:13:35  ( -68.30,  70.34)    2.73                 6
 11/29/2018   20:04:13   (  68.16,-122.14) 11/29/2018   20:03:02  (  68.18,-122.15)    2.29                71
 12/02/2018   10:39:42   (  68.37,  18.74) 12/02/2018   10:40:32  (  68.36,  18.68)    2.49                50
 12/02/2018   11:30:24   ( -68.28,-173.83) 12/02/2018   11:30:02  ( -68.26,-173.81)    2.24                22
 12/02/2018   12:20:51   (  67.24,  -5.25) 12/02/2018   12:19:44  (  67.30,  -7.27)   87.09                67
 12/05/2018   02:06:10   ( -69.39, -34.19) 12/05/2018   02:07:17  ( -69.27, -31.93)   89.54                67
 12/05/2018   02:56:36   (  68.32, 134.57) 12/05/2018   02:56:59  (  68.32, 134.52)    2.24                23