Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 5 8.  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) (   0.80,-132.22)  445.22                80
 05/10/2020   09:59:09   (  -0.10,-128.31) (  -0.26,-127.64)   76.44                80
 05/12/2020   22:04:30   (   0.08,-128.31) (   0.06,-128.28)    3.47                80
 05/15/2020   10:07:05   (  -0.07,-128.33) (   0.04,-128.91)   65.55                80
 05/16/2020   09:45:29   (  -0.08,-128.32) (  -0.96,-124.32)  455.93                80
 05/17/2020   22:09:47   (   0.05,-128.31) (  -0.24,-129.54)  140.96                80
 05/18/2020   21:48:12   (   0.07,-128.31) (   0.82,-124.97)  380.74                80
 05/20/2020   10:12:21   (  -0.04,-128.33) (   0.39,-130.15)  208.97                80
 05/21/2020   09:50:45   (  -0.06,-128.32) (  -0.67,-125.58)  311.91                80