Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 4 14.  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)
 04/14/2021   09:48:02   ( -69.04,-149.37) 04/14/2021   09:49:12  ( -68.95,-148.29)   44.02                70
 04/14/2021   10:38:37   (  68.43,  18.77) 04/14/2021   10:38:46  (  68.46,  18.74)    3.24                 9
 04/14/2021   11:29:19   ( -68.36,-173.82) 04/14/2021   11:28:16  ( -68.34,-173.77)    2.85                63
 04/17/2021   02:04:45   ( -68.51, -32.87) 04/17/2021   02:05:46  ( -68.53, -32.94)    3.52                61
 04/17/2021   02:55:30   (  68.43, 134.54) 04/17/2021   02:55:13  (  68.42, 134.57)    2.00                17
 04/17/2021   03:46:02   ( -67.82, -57.37) 04/17/2021   03:44:51  ( -67.87, -58.45)   45.62                71
 04/19/2021   18:21:39   ( -68.52,  82.90) 04/19/2021   18:22:14  ( -68.50,  82.90)    2.17                35
 04/19/2021   19:12:23   (  68.39,-109.63) 04/19/2021   19:11:41  (  68.38,-109.60)    1.40                42
 04/22/2021   09:47:57   (  68.93,  30.81) 04/22/2021   09:49:07  (  68.84,  31.56)   31.98                70
 04/22/2021   10:38:32   ( -68.47,-161.26) 04/22/2021   10:38:42  ( -68.46,-161.28)    1.74                10
 04/22/2021   11:29:16   (  68.35,   6.21) 04/22/2021   11:28:09  (  68.34,   6.23)    1.37                67
 04/25/2021   02:04:44   (  68.57, 147.07) 04/25/2021   02:05:39  (  68.57, 147.10)    1.51                55
 04/25/2021   02:55:25   ( -68.43, -45.43) 04/25/2021   02:55:10  ( -68.41, -45.46)    2.37                15
 04/25/2021   03:45:57   (  67.66, 122.84) 04/25/2021   03:44:48  (  67.67, 121.33)   64.07                69
 04/27/2021   18:21:36   (  68.53, -97.11) 04/27/2021   18:22:06  (  68.51, -97.09)    2.87                30
 04/27/2021   19:12:17   ( -68.39,  70.40) 04/27/2021   19:11:36  ( -68.41,  70.43)    2.85                41