Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 12 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/28/2022   22:33:27   (   0.01,-127.60) (  -0.21,-128.61)  115.21                80
 12/29/2022   22:12:28   (   0.00,-127.63) (   0.78,-124.17)  394.48                80
 12/31/2022   10:34:54   (  -0.01,-127.75) (   0.40,-129.58)  207.91                80
 01/01/2023   10:19:15   (  -0.01,-127.79) (  -0.59,-125.14)  301.84                80
 01/02/2023   22:41:50   (   0.01,-127.77) (  -0.62,-130.58)  320.89                80
 01/03/2023   22:20:51   (   0.00,-127.79) (   0.38,-126.14)  188.28                80
 01/05/2023   10:43:17   (  -0.01,-127.90) (   0.81,-131.55)  415.55                80
 01/06/2023   10:27:37   (  -0.00,-127.93) (  -0.19,-127.11)   93.57                80
 01/08/2023   22:31:52   (  -0.00,-127.93) (  -0.07,-128.11)   20.90                80
 01/09/2023   22:10:53   (  -0.01,-127.95) (   0.94,-123.67)  487.80                80