Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2020 12 22.  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)
 12/23/2020   10:38:50   (  68.47,  18.73) 12/23/2020   10:39:52  (  68.44,  18.79)    3.39                62
 12/23/2020   11:29:31   ( -68.33,-173.78) 12/23/2020   11:29:22  ( -68.33,-173.71)    2.76                 9
 12/23/2020   12:20:07   (  67.77,  -5.77) 12/23/2020   12:18:56  (  67.83,  -6.66)   38.13                71
 12/26/2020   02:55:44   (  68.37, 134.62) 12/26/2020   02:56:22  (  68.37, 134.57)    2.09                38
 12/26/2020   03:46:26   ( -68.29, -57.96) 12/26/2020   03:45:52  ( -68.26, -57.93)    3.18                34
 12/28/2020   18:22:05   ( -69.04,  82.18) 12/28/2020   18:23:15  ( -68.90,  83.46)   53.16                70
 12/28/2020   19:12:38   (  68.33,-109.56) 12/28/2020   19:12:50  (  68.34,-109.59)    1.43                12
 12/28/2020   20:03:20   ( -68.24,  57.87) 12/28/2020   20:02:20  ( -68.23,  57.92)    2.35                60
 12/31/2020   10:38:49   ( -68.41,-161.21) 12/31/2020   10:39:52  ( -68.42,-161.25)    2.44                63
 12/31/2020   11:29:33   (  68.29,   6.25) 12/31/2020   11:29:19  (  68.31,   6.25)    1.60                14
 12/31/2020   12:20:07   ( -67.77, 174.23) 12/31/2020   12:18:56  ( -67.81, 173.31)   38.85                71
 01/03/2021   02:55:44   ( -68.37, -45.39) 01/03/2021   02:56:21  ( -68.39, -45.42)    2.38                37
 01/03/2021   03:46:28   (  68.26, 122.06) 01/03/2021   03:45:48  (  68.27, 122.08)    1.55                40