Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 12 3.  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)
 12/04/2017   18:22:48   ( -68.50,  82.78) 12/04/2017   18:23:59  ( -68.46,  82.95)    8.26                71
 12/04/2017   19:13:30   (  68.28,-109.62) 12/04/2017   19:13:27  (  68.29,-109.61)    1.18                 3
 12/04/2017   20:04:11   ( -68.13,  57.88) 12/04/2017   20:02:58  ( -68.13,  57.83)    2.30                73
 12/07/2017   10:39:40   ( -68.38,-161.29) 12/07/2017   10:40:28  ( -68.40,-161.23)    3.34                48
 12/07/2017   11:30:23   (  68.21,   6.24) 12/07/2017   11:29:56  (  68.23,   6.20)    2.28                27
 12/07/2017   12:20:49   ( -67.26, 174.72) 12/07/2017   12:19:41  ( -67.29, 172.76)   84.46                68
 12/10/2017   02:06:07   (  69.27, 145.97) 12/10/2017   02:07:14  (  69.17, 147.98)   80.36                67
 12/10/2017   02:56:33   ( -68.32, -45.43) 12/10/2017   02:56:57  ( -68.34, -45.42)    3.30                24
 12/10/2017   03:47:16   (  68.15, 122.09) 12/10/2017   03:46:25  (  68.17, 122.02)    3.51                51
 12/12/2017   18:22:44   (  68.41, -97.09) 12/12/2017   18:23:55  (  68.38, -97.12)    2.91                71
 12/12/2017   19:13:26   ( -68.30,  70.35) 12/12/2017   19:13:25  ( -68.28,  70.39)    3.02                 1
 12/12/2017   20:04:07   (  68.04,-122.00) 12/12/2017   20:02:54  (  68.05,-122.24)   10.11                73
 12/15/2017   10:39:37   (  68.35,  18.75) 12/15/2017   10:40:23  (  68.37,  18.75)    2.55                46
 12/15/2017   11:30:19   ( -68.24,-173.79) 12/15/2017   11:29:54  ( -68.21,-173.80)    3.11                25
 12/15/2017   12:20:44   (  67.11,  -5.11) 12/15/2017   12:19:38  (  67.14,  -7.38)   98.17                66