Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 5 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/12/2022   10:20:14   (   0.09,-127.82) (   0.21,-128.32)   57.15                80
 05/13/2022   10:04:30   (   0.10,-127.79) (  -0.76,-123.86)  447.00                80
 05/14/2022   22:24:18   (  -0.08,-127.74) (  -0.42,-129.28)  175.52                80
 05/15/2022   22:08:33   (  -0.08,-127.71) (   0.56,-124.83)  328.42                80
 05/17/2022   10:28:13   (   0.06,-127.64) (   0.64,-130.21)  293.25                80
 05/18/2022   10:12:28   (   0.07,-127.59) (  -0.33,-125.75)  209.83                80
 05/19/2022   22:32:15   (  -0.05,-127.52) (  -0.89,-131.16)  414.91                80
 05/20/2022   22:16:31   (  -0.06,-127.48) (   0.10,-126.70)   88.35                80
 05/23/2022   10:17:46   (   0.05,-127.36) (   0.13,-127.62)   30.44                80