Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2021 6 8.  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,-144.53) 06/20/2021   19:54:21  (  78.20,-144.44)    2.06                74
 06/20/2021   20:44:05   ( -78.23,  22.87) 06/20/2021   20:45:06  ( -78.21,  22.82)    2.13                61
 06/20/2021   21:35:07   (  78.22,-169.95) 06/20/2021   21:35:51  (  78.21,-169.83)    3.28                44
 06/20/2021   22:26:05   ( -78.24,  -2.56) 06/20/2021   22:26:36  ( -78.22,  -2.57)    2.96                31
 06/20/2021   23:17:07   (  78.23, 164.62) 06/20/2021   23:17:22  (  78.25, 164.57)    2.17                15
 06/21/2021   00:08:05   ( -78.25, -27.98) 06/21/2021   00:08:06  ( -78.22, -27.95)    4.10                 1
 06/21/2021   00:59:07   (  78.24, 139.19) 06/21/2021   00:58:52  (  78.25, 139.18)    0.84                15
 06/21/2021   01:50:05   ( -78.27, -53.40) 06/21/2021   01:49:37  ( -78.26, -53.56)    3.59                28
 06/21/2021   02:41:07   (  78.25, 113.77) 06/21/2021   02:40:22  (  78.25, 113.79)    0.70                45
 06/21/2021   03:32:05   ( -78.28, -78.83) 06/21/2021   03:31:07  ( -78.26, -78.94)    3.27                58
 06/21/2021   04:23:07   (  78.27,  88.34) 06/21/2021   04:21:52  (  78.26,  88.41)    2.00                75