Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 6 9.  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)
 06/09/2021   08:57:41   ( -69.07,-136.78) 06/09/2021   08:58:52  ( -68.95,-135.94)   36.49                71
 06/09/2021   09:48:18   (  68.58,  31.19) 06/09/2021   09:48:24  (  68.56,  31.23)    2.53                 6
 06/09/2021   10:38:58   ( -68.43,-161.30) 06/09/2021   10:37:53  ( -68.45,-161.27)    2.02                65
 06/12/2021   01:14:29   ( -68.64, -20.44) 06/12/2021   01:15:24  ( -68.62, -20.47)    3.36                55
 06/12/2021   02:05:13   (  68.53, 147.03) 06/12/2021   02:04:51  (  68.50, 147.03)    2.91                22
 06/12/2021   02:55:42   ( -67.74, -44.65) 06/12/2021   02:54:32  ( -67.78, -46.18)   64.44                70
 06/14/2021   16:41:00   (  69.60, -73.32) 06/14/2021   16:42:07  (  69.49, -71.10)   86.90                67
 06/14/2021   17:31:25   ( -68.59,  95.39) 06/14/2021   17:31:51  ( -68.61,  95.41)    2.43                26
 06/14/2021   18:22:09   (  68.48, -97.14) 06/14/2021   18:21:18  (  68.49, -97.09)    2.82                51
 06/17/2021   08:57:40   (  68.70,  43.71) 06/17/2021   08:58:48  (  68.71,  43.77)    2.63                68
 06/17/2021   09:48:21   ( -68.54,-148.77) 06/17/2021   09:48:19  ( -68.55,-148.79)    1.29                 2
 06/17/2021   10:39:01   (  68.21,  18.96) 06/17/2021   10:37:49  (  68.26,  18.50)   19.63                72
 06/20/2021   01:14:36   (  68.65, 159.54) 06/20/2021   01:15:16  (  68.64, 159.56)    1.62                40
 06/20/2021   02:05:17   ( -68.49, -32.94) 06/20/2021   02:04:47  ( -68.48, -33.00)    2.42                30
 06/22/2021   16:40:58   ( -69.30, 107.10) 06/22/2021   16:42:07  ( -69.19, 108.49)   55.80                69
 06/22/2021   17:31:31   (  68.60, -84.64) 06/22/2021   17:31:42  (  68.62, -84.59)    2.47                11
 06/22/2021   18:22:12   ( -68.45,  82.89) 06/22/2021   18:21:13  ( -68.47,  82.86)    2.51                59