Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 3 19.  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)
 03/21/2021   09:48:15   (  69.18,  30.40) 03/21/2021   09:49:24  (  69.09,  31.91)   60.85                69
 03/21/2021   10:38:44   ( -68.41,-161.25) 03/21/2021   10:39:04  ( -68.42,-161.29)    1.86                20
 03/21/2021   11:29:28   (  68.28,   6.24) 03/21/2021   11:28:31  (  68.31,   6.22)    3.39                57
 03/24/2021   02:04:57   (  68.52, 147.07) 03/24/2021   02:06:01  (  68.52, 147.08)    0.47                64
 03/24/2021   02:55:38   ( -68.39, -45.44) 03/24/2021   02:55:31  ( -68.42, -45.42)    2.73                 7
 03/24/2021   03:46:15   (  67.88, 122.51) 03/24/2021   03:45:04  (  67.96, 121.70)   35.27                71
 03/26/2021   18:21:50   (  68.45, -97.06) 03/26/2021   18:22:29  (  68.45, -97.12)    2.47                39
 03/26/2021   19:12:32   ( -68.37,  70.36) 03/26/2021   19:11:59  ( -68.35,  70.38)    3.19                33
 03/29/2021   09:48:11   ( -69.15,-149.54) 03/29/2021   09:49:20  ( -69.05,-148.14)   56.70                69
 03/29/2021   10:38:44   (  68.44,  18.73) 03/29/2021   10:38:56  (  68.43,  18.73)    0.98                12
 03/29/2021   11:29:24   ( -68.31,-173.78) 03/29/2021   11:28:25  ( -68.33,-173.76)    3.01                59
 04/01/2021   02:04:53   ( -68.55, -32.95) 04/01/2021   02:05:55  ( -68.53, -32.91)    3.12                62
 04/01/2021   02:55:36   (  68.38, 134.59) 04/01/2021   02:55:22  (  68.41, 134.58)    3.37                14
 04/01/2021   03:46:10   ( -67.86, -57.45) 04/01/2021   03:44:59  ( -67.92, -58.36)   38.74                71