Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 1 14.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(NOAA-19) NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 01/19/2021   16:56:03   ( -78.83,  78.41) 01/19/2021   16:54:51  ( -78.83,  78.25)    3.43                72
 01/19/2021   17:46:49   (  78.86,-114.43) 01/19/2021   17:45:56  (  78.83,-114.49)    2.92                53
 01/19/2021   18:37:33   ( -78.87,  52.80) 01/19/2021   18:36:51  ( -78.85,  52.87)    3.09                42
 01/19/2021   19:28:18   (  78.86,-139.80) 01/19/2021   19:27:56  (  78.85,-139.88)    2.03                22
 01/19/2021   20:19:02   ( -78.87,  27.43) 01/19/2021   20:18:51  ( -78.86,  27.48)    1.56                11
 01/19/2021   21:09:47   (  78.86,-165.17) 01/19/2021   21:09:56  (  78.86,-165.27)    2.29                 9
 01/19/2021   22:00:31   ( -78.87,   2.06) 01/19/2021   22:00:51  ( -78.88,   2.09)    0.90                20
 01/19/2021   22:51:17   (  78.89, 169.22) 01/19/2021   22:51:56  (  78.88, 169.34)    3.23                39
 01/19/2021   23:42:00   ( -78.87, -23.31) 01/19/2021   23:42:51  ( -78.89, -23.29)    2.16                51
 01/20/2021   00:32:46   (  78.89, 143.84) 01/20/2021   00:33:56  (  78.89, 143.96)    2.43                70