Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 9 3.  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)
 09/10/2021   03:35:09   (  78.26, 103.55) 09/10/2021   03:33:54  (  78.25, 103.65)    2.88                75
 09/10/2021   04:25:53   ( -78.27, -89.17) 09/10/2021   04:24:53  ( -78.24, -89.15)    3.39                60
 09/10/2021   05:16:38   (  78.26,  78.16) 09/10/2021   05:15:54  (  78.25,  78.21)    1.51                44
 09/10/2021   06:07:22   ( -78.27,-114.56) 09/10/2021   06:06:53  ( -78.24,-114.60)    2.84                29
 09/10/2021   06:58:07   (  78.27,  52.77) 09/10/2021   06:57:54  (  78.26,  52.77)    0.21                13
 09/10/2021   07:48:51   ( -78.27,-139.95) 09/10/2021   07:48:53  ( -78.25,-140.04)    2.93                 2
 09/10/2021   08:39:36   (  78.27,  27.38) 09/10/2021   08:39:54  (  78.27,  27.33)    1.23                18
 09/10/2021   09:30:20   ( -78.27,-165.34) 09/10/2021   09:30:52  ( -78.30,-165.25)    3.21                32
 09/10/2021   10:21:05   (  78.27,   1.99) 09/10/2021   10:21:54  (  78.28,   1.89)    2.58                49
 09/10/2021   11:11:49   ( -78.28, 169.28) 09/10/2021   11:12:52  ( -78.31, 169.30)    3.29                63
 09/10/2021   12:02:40   (  78.51, -24.75) 09/10/2021   12:03:49  (  78.47, -22.38)   52.61                69