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

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/01/2023   10:19:14   (  -0.01,-127.79) (  -0.58,-125.13)  302.01                80
 01/02/2023   22:41:50   (   0.01,-127.76) (  -0.63,-130.58)  320.90                80
 01/03/2023   22:20:50   (   0.00,-127.79) (   0.37,-126.14)  188.18                80
 01/05/2023   10:43:17   (  -0.00,-127.90) (   0.81,-131.55)  415.77                80
 01/06/2023   10:27:37   (   0.00,-127.93) (  -0.20,-127.11)   93.23                80
 01/08/2023   22:31:52   (  -0.00,-127.92) (  -0.06,-128.10)   21.42                80
 01/09/2023   22:10:52   (  -0.01,-127.94) (   0.95,-123.67)  487.07                80
 01/11/2023   10:33:19   (   0.00,-128.04) (   0.22,-129.08)  117.84                80
 01/12/2023   10:17:39   (   0.01,-128.06) (  -0.79,-124.64)  390.74                80
 01/13/2023   22:40:14   (  -0.00,-128.03) (  -0.45,-130.07)  232.67                80
 01/14/2023   22:19:14   (  -0.00,-128.05) (   0.56,-125.64)  275.34                80