Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 6 9.  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)
 06/19/2021   15:00:10   (  78.31, -68.60) 06/19/2021   14:59:00  (  78.30, -70.49)   42.56                70
 06/19/2021   15:50:58   ( -78.47,  97.81) 06/19/2021   15:49:54  ( -78.45,  97.76)    2.02                64
 06/19/2021   16:41:43   (  78.47, -94.89) 06/19/2021   16:40:56  (  78.46, -94.98)    2.49                47
 06/19/2021   17:32:27   ( -78.47,  72.43) 06/19/2021   17:31:54  ( -78.46,  72.34)    2.12                33
 06/19/2021   18:23:12   (  78.47,-120.27) 06/19/2021   18:22:56  (  78.47,-120.40)    2.97                16
 06/19/2021   19:13:56   ( -78.47,  47.05) 06/19/2021   19:13:54  ( -78.48,  46.92)    2.94                 2
 06/19/2021   20:04:42   (  78.51,-145.88) 06/19/2021   20:04:56  (  78.48,-145.82)    3.87                14
 06/19/2021   20:55:26   ( -78.51,  21.44) 06/19/2021   20:55:54  ( -78.49,  21.50)    2.91                28
 06/19/2021   21:46:11   (  78.51,-171.26) 06/19/2021   21:46:56  (  78.49,-171.25)    2.67                45
 06/19/2021   22:36:55   ( -78.51,  -3.94) 06/19/2021   22:37:54  ( -78.50,  -3.92)    1.58                59
 06/19/2021   23:27:42   (  78.59, 162.89) 06/19/2021   23:28:55  (  78.54, 163.57)   16.18                73