Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 7 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/09/2021   18:22:27   (   0.07, -75.14) (   1.03, -70.82)  492.75                80
 07/11/2021   06:41:14   (  -0.08, -75.14) (   0.11, -76.00)   97.55                80
 07/12/2021   06:24:57   (  -0.07, -75.15) (  -0.94, -71.41)  426.28                80
 07/13/2021   18:43:53   (   0.09, -75.17) (  -0.23, -76.62)  165.63                80
 07/14/2021   18:27:35   (   0.08, -75.18) (   0.76, -72.02)  358.82                80
 07/16/2021   06:46:22   (  -0.09, -75.19) (   0.39, -77.20)  230.17                80
 07/17/2021   06:30:04   (  -0.09, -75.20) (  -0.66, -72.62)  294.36                80
 07/18/2021   18:49:01   (   0.10, -75.23) (  -0.50, -77.83)  297.03                80
 07/19/2021   18:32:43   (   0.10, -75.24) (   0.56, -73.24)  227.72                80
 07/21/2021   06:51:31   (  -0.11, -75.26) (   0.60, -78.42)  360.72                80
 07/22/2021   06:35:13   (  -0.11, -75.27) (  -0.45, -73.84)  163.98                80