Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 6 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/21/2022   22:24:50   (   0.10,-128.44) (  -0.07,-129.12)   78.33                80
 06/22/2022   22:09:06   (   0.08,-128.45) (   0.94,-124.67)  431.42                80
 06/24/2022   10:28:45   (  -0.12,-128.47) (   0.25,-130.05)  180.08                80
 06/25/2022   10:13:01   (  -0.11,-128.48) (  -0.76,-125.59)  329.05                80
 06/26/2022   22:32:47   (   0.14,-128.48) (  -0.45,-131.00)  288.47                80
 06/27/2022   22:17:02   (   0.13,-128.48) (   0.56,-126.55)  220.56                80
 06/29/2022   10:36:42   (  -0.17,-128.50) (   0.62,-131.93)  391.39                80
 06/30/2022   10:20:57   (  -0.15,-128.50) (  -0.39,-127.48)  117.10                80
 07/02/2022   22:24:59   (   0.17,-128.49) (   0.19,-128.43)    6.79                80