Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 9 7.  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   (  78.25, 103.61) 09/10/2021   03:33:54  (  78.25, 103.68)    1.65                75
 09/10/2021   04:25:53   ( -78.26, -89.13) 09/10/2021   04:24:53  ( -78.24, -89.14)    2.34                60
 09/10/2021   05:16:38   (  78.25,  78.22) 09/10/2021   05:15:54  (  78.26,  78.24)    0.99                44
 09/10/2021   06:07:22   ( -78.26,-114.52) 09/10/2021   06:06:53  ( -78.25,-114.58)    2.22                29
 09/10/2021   06:58:07   (  78.25,  52.84) 09/10/2021   06:57:54  (  78.27,  52.80)    1.75                13
 09/10/2021   07:48:51   ( -78.26,-139.91) 09/10/2021   07:48:53  ( -78.26,-140.02)    2.90                 2
 09/10/2021   08:39:36   (  78.26,  27.45) 09/10/2021   08:39:54  (  78.28,  27.36)    2.98                18
 09/10/2021   09:30:20   ( -78.27,-165.29) 09/10/2021   09:30:52  ( -78.30,-165.24)    3.84                32
 09/10/2021   10:21:06   (  78.30,   1.84) 09/10/2021   10:21:54  (  78.29,   1.92)    2.34                48
 09/10/2021   11:11:50   ( -78.31, 169.10) 09/10/2021   11:12:53  ( -78.27, 169.09)    4.11                63
 09/10/2021   12:02:40   (  78.50, -24.68) 09/10/2021   12:03:49  (  78.48, -22.35)   51.69                69