Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 12 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)
 12/21/2022   10:20:47   (  -0.00,-127.40) (  -0.38,-125.62)  202.31                80
 12/22/2022   22:43:24   (   0.01,-127.38) (  -0.80,-131.07)  420.35                80
 12/23/2022   22:25:04   (   0.00,-127.42) (   0.19,-126.63)   89.52                80
 12/26/2022   10:26:31   (  -0.00,-127.58) (   0.00,-127.60)    2.74                80
 12/28/2022   22:33:27   (   0.01,-127.59) (  -0.23,-128.61)  115.95                80
 12/29/2022   22:12:28   (   0.01,-127.62) (   0.77,-124.17)  393.68                80
 12/31/2022   10:34:54   (  -0.02,-127.75) (   0.41,-129.58)  208.73                80
 01/01/2023   10:19:14   (  -0.01,-127.78) (  -0.59,-125.14)  300.99                80
 01/02/2023   22:41:50   (   0.02,-127.76) (  -0.61,-130.58)  321.85                80
 01/03/2023   22:20:50   (   0.01,-127.79) (   0.39,-126.15)  187.30                80