Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 6 12.  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)
 06/14/2021   16:41:01   (  69.63, -73.37) 06/14/2021   16:42:07  (  69.52, -71.07)   90.02                66
 06/14/2021   17:31:25   ( -68.58,  95.42) 06/14/2021   17:31:52  ( -68.58,  95.36)    2.29                27
 06/14/2021   18:22:09   (  68.46, -97.12) 06/14/2021   18:21:19  (  68.46, -97.14)    0.70                50
 06/17/2021   08:57:39   (  68.68,  43.73) 06/17/2021   08:58:48  (  68.67,  43.72)    0.97                69
 06/17/2021   09:48:21   ( -68.58,-148.83) 06/17/2021   09:48:18  ( -68.57,-148.77)    2.87                 3
 06/17/2021   10:39:00   (  68.20,  18.98) 06/17/2021   10:37:48  (  68.28,  18.53)   20.86                72
 06/20/2021   01:14:35   (  68.64, 159.55) 06/20/2021   01:15:15  (  68.66, 159.58)    2.28                40
 06/20/2021   02:05:16   ( -68.49, -32.93) 06/20/2021   02:04:46  ( -68.50, -32.98)    2.30                30
 06/22/2021   16:40:58   ( -69.30, 107.11) 06/22/2021   16:42:07  ( -69.20, 108.51)   56.14                69
 06/22/2021   17:31:31   (  68.60, -84.63) 06/22/2021   17:31:43  (  68.58, -84.63)    2.27                12
 06/22/2021   18:22:13   ( -68.50,  82.82) 06/22/2021   18:21:13  ( -68.48,  82.88)    3.22                60
 06/25/2021   08:57:43   ( -68.67,-136.27) 06/25/2021   08:58:43  ( -68.68,-136.27)    1.03                60
 06/25/2021   09:48:27   (  68.56,  31.18) 06/25/2021   09:48:10  (  68.55,  31.22)    1.66                17
 06/25/2021   10:38:59   ( -67.93,-160.68) 06/25/2021   10:37:48  ( -68.01,-161.80)   47.58                71