Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 12 27.  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) (  -0.24,-128.60)  115.23                80
 12/29/2022   22:12:28   (   0.00,-127.63) (   0.76,-124.16)  394.50                80
 12/31/2022   10:34:54   (  -0.01,-127.76) (   0.42,-129.57)  207.93                80
 01/01/2023   10:19:15   (  -0.01,-127.79) (  -0.63,-125.15)  301.87                80
 01/02/2023   22:41:50   (   0.01,-127.77) (  -0.64,-130.58)  320.79                80
 01/03/2023   22:20:50   (   0.00,-127.80) (   0.36,-126.14)  188.43                80
 01/05/2023   10:43:17   (  -0.01,-127.91) (   0.82,-131.55)  415.43                80
 01/06/2023   10:27:37   (  -0.00,-127.93) (  -0.18,-127.11)   93.72                80
 01/08/2023   22:31:53   (  -0.00,-127.93) (  -0.02,-128.12)   20.58                80
 01/09/2023   22:10:53   (  -0.01,-127.95) (   0.98,-123.68)  488.09                80