Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 4 21.  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)
 04/22/2021   09:47:57   (  68.92,  30.82) 04/22/2021   09:49:08  (  68.79,  31.50)   30.66                71
 04/22/2021   10:38:32   ( -68.47,-161.26) 04/22/2021   10:38:42  ( -68.45,-161.28)    1.92                10
 04/22/2021   11:29:16   (  68.33,   6.22) 04/22/2021   11:28:09  (  68.34,   6.23)    1.04                67
 04/25/2021   02:04:44   (  68.55, 147.09) 04/25/2021   02:05:39  (  68.57, 147.10)    1.40                55
 04/25/2021   02:55:25   ( -68.42, -45.42) 04/25/2021   02:55:10  ( -68.40, -45.46)    2.88                15
 04/25/2021   03:45:57   (  67.65, 122.86) 04/25/2021   03:44:48  (  67.67, 121.33)   64.92                69
 04/27/2021   18:21:36   (  68.52, -97.09) 04/27/2021   18:22:06  (  68.51, -97.09)    1.34                30
 04/27/2021   19:12:17   ( -68.38,  70.41) 04/27/2021   19:11:36  ( -68.40,  70.41)    2.29                41
 04/30/2021   09:47:51   ( -68.92,-149.16) 04/30/2021   09:49:02  ( -68.84,-148.45)   29.74                71
 04/30/2021   10:38:29   (  68.48,  18.74) 04/30/2021   10:38:33  (  68.49,  18.77)    1.92                 4
 04/30/2021   11:29:10   ( -68.34,-173.76) 04/30/2021   11:28:04  ( -68.34,-173.79)    1.15                66
 05/03/2021   02:04:38   ( -68.56, -32.90) 05/03/2021   02:05:34  ( -68.54, -32.93)    2.71                56
 05/03/2021   02:55:22   (  68.45, 134.56) 05/03/2021   02:55:01  (  68.42, 134.56)    3.28                21
 05/03/2021   03:45:51   ( -67.66, -57.13) 05/03/2021   03:44:42  ( -67.71, -58.64)   64.09                69