Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 9 8.  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   (  78.24, 103.65) 09/10/2021   03:33:54  (  78.26, 103.73)    2.71                75
 09/10/2021   04:25:53   ( -78.25, -89.09) 09/10/2021   04:24:53  ( -78.25, -89.09)    0.74                60
 09/10/2021   05:16:38   (  78.24,  78.26) 09/10/2021   05:15:54  (  78.27,  78.29)    2.71                44
 09/10/2021   06:07:22   ( -78.26,-114.48) 09/10/2021   06:06:53  ( -78.25,-114.53)    1.20                29
 09/10/2021   06:58:07   (  78.25,  52.87) 09/10/2021   06:57:54  (  78.28,  52.85)    3.33                13
 09/10/2021   07:48:51   ( -78.26,-139.87) 09/10/2021   07:48:53  ( -78.26,-139.98)    2.52                 2
 09/10/2021   08:39:37   (  78.29,  27.27) 09/10/2021   08:39:54  (  78.29,  27.42)    3.38                17
 09/10/2021   09:30:21   ( -78.30,-165.48) 09/10/2021   09:30:53  ( -78.27,-165.42)    3.40                32
 09/10/2021   10:21:06   (  78.29,   1.88) 09/10/2021   10:21:54  (  78.30,   1.98)    2.21                48
 09/10/2021   11:11:50   ( -78.30, 169.14) 09/10/2021   11:12:53  ( -78.28, 169.14)    2.53                63
 09/10/2021   12:02:41   (  78.53, -24.87) 09/10/2021   12:03:49  (  78.48, -22.30)   57.14                68