Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 3 28.  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)
 03/29/2021   09:48:10   ( -69.15,-149.54) 03/29/2021   09:49:19  ( -69.05,-148.14)   56.27                69
 03/29/2021   10:38:43   (  68.42,  18.75) 03/29/2021   10:38:55  (  68.44,  18.74)    2.25                12
 03/29/2021   11:29:24   ( -68.30,-173.77) 03/29/2021   11:28:25  ( -68.33,-173.76)    3.44                59
 04/01/2021   02:04:53   ( -68.55, -32.95) 04/01/2021   02:05:55  ( -68.53, -32.92)    2.57                62
 04/01/2021   02:55:37   (  68.41, 134.54) 04/01/2021   02:55:22  (  68.41, 134.59)    2.19                15
 04/01/2021   03:46:10   ( -67.86, -57.44) 04/01/2021   03:44:59  ( -67.91, -58.37)   39.33                71
 04/03/2021   18:21:46   ( -68.48,  82.91) 04/03/2021   18:22:22  ( -68.49,  82.92)    1.40                36
 04/03/2021   19:12:30   (  68.35,-109.61) 04/03/2021   19:11:50  (  68.32,-109.64)    3.35                40
 04/06/2021   09:48:04   (  68.88,  30.85) 04/06/2021   09:49:15  (  68.78,  31.53)   29.26                71
 04/06/2021   10:38:40   ( -68.47,-161.30) 04/06/2021   10:38:49  ( -68.46,-161.24)    3.22                 9
 04/06/2021   11:29:23   (  68.29,   6.24) 04/06/2021   11:28:17  (  68.28,   6.19)    2.41                66
 04/09/2021   02:04:50   (  68.50, 147.13) 04/09/2021   02:05:45  (  68.51, 147.08)    2.48                55
 04/09/2021   02:55:32   ( -68.42, -45.45) 04/09/2021   02:55:15  ( -68.41, -45.41)    1.58                17
 04/09/2021   03:46:03   (  67.59, 122.90) 04/09/2021   03:44:54  (  67.62, 121.31)   67.48                69
 04/11/2021   18:21:44   (  68.50, -97.10) 04/11/2021   18:22:11  (  68.51, -97.04)    2.88                27
 04/11/2021   19:12:25   ( -68.36,  70.40) 04/11/2021   19:11:42  ( -68.36,  70.41)    0.38                43