Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 3 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)
 03/21/2021   09:48:16   (  69.21,  30.35) 03/21/2021   09:49:24  (  69.11,  31.94)   63.78                68
 03/21/2021   10:38:45   ( -68.45,-161.29) 03/21/2021   10:39:04  ( -68.44,-161.26)    1.25                19
 03/21/2021   11:29:29   (  68.31,   6.20) 03/21/2021   11:28:31  (  68.33,   6.25)    3.34                58
 03/24/2021   02:04:57   (  68.50, 147.10) 03/24/2021   02:06:02  (  68.49, 147.04)    2.69                65
 03/24/2021   02:55:38   ( -68.37, -45.42) 03/24/2021   02:55:32  ( -68.38, -45.46)    1.96                 6
 03/24/2021   03:46:16   (  67.91, 122.47) 03/24/2021   03:45:04  (  67.99, 121.72)   32.45                72
 03/26/2021   18:21:50   (  68.48, -97.10) 03/26/2021   18:22:28  (  68.47, -97.10)    0.85                38
 03/26/2021   19:12:31   ( -68.35,  70.39) 03/26/2021   19:11:58  ( -68.37,  70.41)    2.04                33
 03/29/2021   09:48:10   ( -69.13,-149.51) 03/29/2021   09:49:20  ( -69.01,-148.19)   53.80                70
 03/29/2021   10:38:44   (  68.46,  18.69) 03/29/2021   10:38:55  (  68.45,  18.76)    2.92                11
 03/29/2021   11:29:24   ( -68.28,-173.75) 03/29/2021   11:28:26  ( -68.29,-173.80)    2.78                58
 04/01/2021   02:04:53   ( -68.52, -32.92) 04/01/2021   02:05:55  ( -68.55, -32.89)    2.99                62
 04/01/2021   02:55:37   (  68.40, 134.56) 04/01/2021   02:55:23  (  68.37, 134.54)    3.01                14
 04/01/2021   03:46:11   ( -67.89, -57.48) 04/01/2021   03:44:59  ( -67.94, -58.34)   36.54                72
 04/03/2021   18:21:46   ( -68.45,  82.95) 04/03/2021   18:22:23  ( -68.46,  82.89)    2.66                37
 04/03/2021   19:12:30   (  68.33,-109.58) 04/03/2021   19:11:50  (  68.34,-109.61)    1.62                40