Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 1 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/23/2023   10:15:59   (   0.02,-128.22) (  -0.94,-124.11)  469.59                80
 01/24/2023   22:38:32   (  -0.02,-128.20) (  -0.31,-129.54)  151.82                80
 01/25/2023   22:17:32   (  -0.02,-128.21) (   0.67,-125.09)  355.50                80
 01/27/2023   10:39:57   (   0.01,-128.26) (   0.53,-130.49)  254.66                80
 01/28/2023   10:24:18   (   0.01,-128.27) (  -0.52,-126.06)  252.89                80
 01/29/2023   22:46:50   (  -0.01,-128.26) (  -0.77,-131.48)  368.20                80
 01/30/2023   22:25:51   (  -0.02,-128.26) (   0.29,-127.05)  138.72                80
 02/01/2023   10:48:15   (   0.01,-128.29) (   0.97,-132.44)  473.09                80
 02/02/2023   10:32:34   (   0.01,-128.30) (  -0.03,-128.00)   33.90                80
 02/04/2023   22:36:47   (  -0.01,-128.28) (  -0.16,-128.99)   80.96                80
 02/05/2023   22:15:47   (  -0.01,-128.28) (   0.84,-124.55)  425.35                80