Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2021 8 17.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-19) NOAA-19 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/30/2021   21:54:30   ( -77.98,   6.55) 08/30/2021   21:55:37  ( -77.98,   6.49)    1.48                67
 08/30/2021   22:45:29   (  77.97, 173.76) 08/30/2021   22:46:22  (  77.97, 173.87)    2.58                53
 08/30/2021   23:36:30   ( -77.99, -18.89) 08/30/2021   23:37:07  ( -77.98, -18.90)    1.00                37
 08/31/2021   00:27:29   (  77.98, 148.32) 08/31/2021   00:27:53  (  78.01, 148.27)    3.37                24
 08/31/2021   01:18:30   ( -78.00, -44.33) 08/31/2021   01:18:37  ( -77.98, -44.28)    2.09                 7