Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 3 25.  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)
 03/26/2021   18:21:50   (  68.45, -97.06) 03/26/2021   18:22:29  (  68.45, -97.12)    2.68                39
 03/26/2021   19:12:31   ( -68.32,  70.42) 03/26/2021   19:11:59  ( -68.34,  70.38)    2.86                32
 03/29/2021   09:48:10   ( -69.15,-149.55) 03/29/2021   09:49:19  ( -69.05,-148.15)   56.68                69
 03/29/2021   10:38:43   (  68.43,  18.73) 03/29/2021   10:38:55  (  68.43,  18.73)    0.27                12
 03/29/2021   11:29:24   ( -68.31,-173.78) 03/29/2021   11:28:25  ( -68.32,-173.76)    2.08                59
 04/01/2021   02:04:52   ( -68.50, -32.89) 04/01/2021   02:05:55  ( -68.52, -32.92)    2.68                63
 04/01/2021   02:55:37   (  68.42, 134.52) 04/01/2021   02:55:22  (  68.40, 134.58)    3.26                15
 04/01/2021   03:46:10   ( -67.86, -57.45) 04/01/2021   03:44:59  ( -67.91, -58.37)   38.92                71
 04/03/2021   18:21:46   ( -68.49,  82.90) 04/03/2021   18:22:22  ( -68.49,  82.92)    0.79                36
 04/03/2021   19:12:30   (  68.36,-109.62) 04/03/2021   19:11:49  (  68.37,-109.58)    2.02                41
 04/06/2021   09:48:04   (  68.89,  30.83) 04/06/2021   09:49:15  (  68.78,  31.52)   30.49                71
 04/06/2021   10:38:39   ( -68.43,-161.24) 04/06/2021   10:38:49  ( -68.46,-161.24)    2.79                10
 04/06/2021   11:29:23   (  68.31,   6.23) 04/06/2021   11:28:16  (  68.33,   6.26)    3.20                67