Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2021 6 7.  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)
 06/20/2021   19:53:07   (  78.21,-144.54) 06/20/2021   19:54:21  (  78.21,-144.49)    1.38                74
 06/20/2021   20:44:05   ( -78.23,  22.86) 06/20/2021   20:45:06  ( -78.22,  22.77)    2.01                61
 06/20/2021   21:35:07   (  78.22,-169.97) 06/20/2021   21:35:51  (  78.22,-169.88)    2.04                44
 06/20/2021   22:26:05   ( -78.24,  -2.57) 06/20/2021   22:26:36  ( -78.22,  -2.61)    2.10                31
 06/20/2021   23:17:07   (  78.23, 164.61) 06/20/2021   23:17:21  (  78.22, 164.74)    3.19                14
 06/21/2021   00:08:05   ( -78.25, -27.99) 06/21/2021   00:08:06  ( -78.23, -28.00)    2.93                 1
 06/21/2021   00:59:07   (  78.24, 139.18) 06/21/2021   00:58:52  (  78.26, 139.13)    2.36                15
 06/21/2021   01:50:05   ( -78.27, -53.41) 06/21/2021   01:49:36  ( -78.23, -53.39)    4.06                29