Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 3 31.  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)
 04/01/2021   02:04:53   ( -68.54, -32.94) 04/01/2021   02:05:55  ( -68.55, -32.90)    1.80                62
 04/01/2021   02:55:37   (  68.40, 134.55) 04/01/2021   02:55:23  (  68.38, 134.55)    2.22                14
 04/01/2021   03:46:10   ( -67.85, -57.43) 04/01/2021   03:44:59  ( -67.94, -58.34)   39.32                71
 04/03/2021   18:21:46   ( -68.48,  82.92) 04/03/2021   18:22:24  ( -68.49,  82.91)    1.25                38
 04/03/2021   19:12:30   (  68.34,-109.60) 04/03/2021   19:11:52  (  68.32,-109.65)    3.38                38
 04/06/2021   09:48:05   (  68.97,  30.71) 04/06/2021   09:49:16  (  68.86,  31.61)   37.96                71
 04/06/2021   10:38:39   ( -68.47,-161.29) 04/06/2021   10:38:51  ( -68.48,-161.23)    2.66                12
 04/06/2021   11:29:22   (  68.28,   6.26) 04/06/2021   11:28:19  (  68.30,   6.21)    3.29                63
 04/09/2021   02:04:51   (  68.54, 147.07) 04/09/2021   02:05:49  (  68.56, 147.12)    3.25                58
 04/09/2021   02:55:32   ( -68.41, -45.44) 04/09/2021   02:55:20  ( -68.41, -45.44)    0.35                12
 04/09/2021   03:46:06   (  67.74, 122.71) 04/09/2021   03:44:56  (  67.78, 121.47)   52.31                70
 04/11/2021   18:21:44   (  68.49, -97.09) 04/11/2021   18:22:18  (  68.49, -97.10)    0.69                34
 04/11/2021   19:12:25   ( -68.35,  70.41) 04/11/2021   19:11:49  ( -68.33,  70.35)    3.65                36
 04/14/2021   09:48:02   ( -69.04,-149.36) 04/14/2021   09:49:13  ( -68.91,-148.34)   43.10                71
 04/14/2021   10:38:37   (  68.44,  18.76) 04/14/2021   10:38:46  (  68.46,  18.74)    2.13                 9
 04/14/2021   11:29:18   ( -68.30,-173.75) 04/14/2021   11:28:17  ( -68.31,-173.81)    2.62                61