Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 12 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/18/2022   22:16:40   (   0.00,-127.28) (   0.57,-124.65)  298.86                80
 12/20/2022   10:36:27   (  -0.01,-127.27) (   0.63,-130.06)  318.16                80
 12/21/2022   10:20:47   (  -0.01,-127.22) (  -0.36,-125.62)  182.74                80
 12/22/2022   22:40:43   (   0.01,-127.08) (  -0.87,-131.06)  452.74                80
 12/23/2022   22:25:03   (   0.01,-127.03) (   0.12,-126.62)   47.65                80
 12/26/2022   10:26:29   (  -0.01,-126.96) (   0.14,-127.57)   70.65                80
 12/27/2022   10:10:49   (  -0.00,-126.90) (  -0.86,-123.14)  429.45                80
 12/28/2022   22:30:44   (   0.01,-126.76) (  -0.42,-128.56)  206.62                80
 12/29/2022   22:15:04   (   0.01,-126.70) (   0.57,-124.12)  293.57                80
 12/31/2022   10:34:51   (  -0.02,-126.68) (   0.61,-129.53)  324.95                80