Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 9 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)
 09/10/2021   03:35:09   (  78.26, 103.54) 09/10/2021   03:33:54  (  78.24, 103.62)    3.02                75
 09/10/2021   04:25:52   ( -78.23, -88.99) 09/10/2021   04:24:52  ( -78.26, -88.98)    3.22                60
 09/10/2021   05:16:38   (  78.26,  78.15) 09/10/2021   05:15:54  (  78.25,  78.18)    1.82                44
 09/10/2021   06:07:22   ( -78.28,-114.60) 09/10/2021   06:06:52  ( -78.27,-114.43)    3.95                30
 09/10/2021   06:58:07   (  78.27,  52.76) 09/10/2021   06:57:54  (  78.26,  52.74)    1.12                13
 09/10/2021   07:48:51   ( -78.28,-139.99) 09/10/2021   07:48:52  ( -78.28,-139.87)    2.66                 1
 09/10/2021   08:39:36   (  78.27,  27.37) 09/10/2021   08:39:54  (  78.27,  27.30)    1.72                18
 09/10/2021   09:30:20   ( -78.28,-165.37) 09/10/2021   09:30:52  ( -78.29,-165.31)    1.60                32
 09/10/2021   10:21:05   (  78.27,   1.99) 09/10/2021   10:21:54  (  78.28,   1.86)    2.91                49
 09/10/2021   11:11:49   ( -78.29, 169.24) 09/10/2021   11:12:52  ( -78.30, 169.25)    1.41                63
 09/10/2021   12:02:40   (  78.51, -24.75) 09/10/2021   12:03:49  (  78.47, -22.42)   52.09                69