Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 5 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/20/2022   22:16:32   (  -0.06,-127.51) (   0.15,-126.71)   92.62                80
 05/23/2022   10:20:27   (   0.05,-127.39) (   0.08,-127.63)   26.31                80
 05/24/2022   10:02:02   (   0.07,-127.35) (  -0.91,-123.17)  477.26                80
 05/25/2022   22:21:48   (  -0.04,-127.30) (  -0.35,-128.57)  146.18                80
 05/26/2022   22:06:04   (  -0.05,-127.25) (   0.64,-124.11)  357.48                80
 05/28/2022   10:25:43   (   0.02,-127.18) (   0.57,-129.49)  264.72                80
 05/29/2022   10:09:59   (   0.03,-127.13) (  -0.41,-125.04)  238.18                80
 05/30/2022   22:29:46   (  -0.00,-127.06) (  -0.77,-130.45)  387.18                80
 05/31/2022   22:14:02   (  -0.01,-127.01) (   0.22,-126.00)  115.78                80