Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 8 30.  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, 103.66) 09/10/2021   03:33:54  (  78.24, 103.65)    0.79                75
 09/10/2021   04:25:53   ( -78.24, -89.04) 09/10/2021   04:24:53  ( -78.24, -89.14)    2.22                60
 09/10/2021   05:16:38   (  78.24,  78.28) 09/10/2021   05:15:54  (  78.25,  78.21)    2.05                44
 09/10/2021   06:07:22   ( -78.25,-114.43) 09/10/2021   06:06:53  ( -78.25,-114.58)    3.44                29
 09/10/2021   06:58:08   (  78.28,  52.67) 09/10/2021   06:57:54  (  78.26,  52.77)    3.21                14
 09/10/2021   07:48:52   ( -78.29,-140.04) 09/10/2021   07:48:53  ( -78.25,-140.03)    3.62                 1
 09/10/2021   08:39:37   (  78.29,  27.28) 09/10/2021   08:39:54  (  78.27,  27.33)    1.89                17
 09/10/2021   09:30:21   ( -78.29,-165.42) 09/10/2021   09:30:53  ( -78.26,-165.47)    3.15                32
 09/10/2021   10:21:06   (  78.29,   1.89) 09/10/2021   10:21:54  (  78.28,   1.89)    0.81                48
 09/10/2021   11:11:50   ( -78.29, 169.19) 09/10/2021   11:12:53  ( -78.27, 169.09)    3.29                63
 09/10/2021   12:02:40   (  78.49, -24.62) 09/10/2021   12:03:49  (  78.47, -22.38)   49.71                69