Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 1 19.  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,  78.43) 01/19/2021   16:54:51  ( -78.83,  78.27)    3.42                72
 01/19/2021   17:46:49   (  78.85,-114.38) 01/19/2021   17:45:56  (  78.84,-114.46)    1.94                53
 01/19/2021   18:37:33   ( -78.87,  52.82) 01/19/2021   18:36:51  ( -78.85,  52.88)    2.56                42
 01/19/2021   19:28:18   (  78.85,-139.76) 01/19/2021   19:27:56  (  78.85,-139.84)    1.94                22
 01/19/2021   20:19:02   ( -78.87,  27.45) 01/19/2021   20:18:51  ( -78.86,  27.50)    1.20                11
 01/19/2021   21:09:47   (  78.85,-165.13) 01/19/2021   21:09:56  (  78.87,-165.23)    3.05                 9
 01/19/2021   22:00:31   ( -78.87,   2.07) 01/19/2021   22:00:51  ( -78.88,   2.11)    1.36                20
 01/19/2021   22:51:17   (  78.89, 169.26) 01/19/2021   22:51:56  (  78.88, 169.38)    2.71                39
 01/19/2021   23:42:00   ( -78.87, -23.30) 01/19/2021   23:42:51  ( -78.89, -23.28)    2.78                51
 01/20/2021   00:32:46   (  78.89, 143.89) 01/20/2021   00:33:56  (  78.90, 144.00)    2.70                70