Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 1 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/09/2023   22:10:53   (  -0.01,-127.94) (   0.97,-123.67)  487.18                80
 01/11/2023   10:33:18   (   0.00,-128.03) (   0.25,-129.07)  118.39                80
 01/12/2023   10:17:39   (   0.01,-128.05) (  -0.75,-124.63)  390.06                80
 01/13/2023   22:40:14   (   0.00,-128.03) (  -0.43,-130.08)  233.12                80
 01/14/2023   22:19:13   (  -0.00,-128.04) (   0.52,-125.63)  274.84                80
 01/16/2023   10:41:40   (   0.00,-128.12) (   0.65,-131.04)  332.14                80
 01/17/2023   10:26:00   (   0.00,-128.14) (  -0.37,-126.60)  175.55                80
 01/18/2023   22:48:34   (  -0.01,-128.10) (  -0.92,-132.02)  448.41                80
 01/19/2023   22:27:34   (  -0.01,-128.10) (   0.10,-127.59)   58.40                80
 01/22/2023   10:31:40   (   0.00,-128.17) (   0.11,-128.55)   44.15                80