Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 1 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/22/2023   10:31:38   (   0.02,-128.21) (   0.12,-128.54)   38.14                80
 01/23/2023   10:15:59   (   0.02,-128.22) (  -0.91,-124.10)  469.51                80
 01/24/2023   22:38:32   (  -0.02,-128.20) (  -0.34,-129.53)  151.94                80
 01/25/2023   22:17:33   (  -0.01,-128.21) (   0.70,-125.10)  355.39                80
 01/27/2023   10:39:58   (   0.01,-128.26) (   0.50,-130.50)  254.79                80
 01/28/2023   10:24:17   (   0.01,-128.27) (  -0.49,-126.06)  252.73                80
 01/29/2023   22:46:51   (  -0.01,-128.26) (  -0.74,-131.49)  368.35                80
 01/30/2023   22:25:50   (  -0.01,-128.26) (   0.25,-127.04)  138.51                80
 02/01/2023   10:48:15   (   0.01,-128.29) (   0.94,-132.45)  473.29                80
 02/02/2023   10:32:35   (   0.01,-128.30) (  -0.05,-128.00)   33.59                80
 02/04/2023   22:36:48   (  -0.01,-128.28) (  -0.14,-129.00)   81.30                80