Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 5 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/09/2020   10:20:44   (  -0.08,-128.31) (   0.79,-132.22)  445.40                80
 05/10/2020   09:59:09   (  -0.10,-128.31) (  -0.26,-127.64)   76.21                80
 05/12/2020   22:04:30   (   0.08,-128.30) (   0.06,-128.28)    3.42                80
 05/15/2020   10:07:05   (  -0.07,-128.32) (   0.04,-128.90)   66.07                80
 05/16/2020   09:45:29   (  -0.08,-128.32) (  -0.96,-124.32)  455.34                80
 05/17/2020   22:09:47   (   0.05,-128.31) (  -0.25,-129.54)  141.51                80
 05/18/2020   21:48:12   (   0.07,-128.31) (   0.81,-124.97)  380.15                80
 05/20/2020   10:12:22   (  -0.04,-128.32) (   0.34,-130.17)  209.81                80
 05/21/2020   09:50:45   (  -0.06,-128.31) (  -0.65,-125.58)  311.00                80
 05/22/2020   22:15:04   (   0.04,-128.28) (  -0.55,-130.80)  287.68                80