Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 12 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/31/2022   10:34:54   (  -0.01,-127.76) (   0.41,-129.58)  207.76                80
 01/01/2023   10:19:15   (  -0.01,-127.79) (  -0.59,-125.14)  301.95                80
 01/02/2023   22:41:50   (   0.01,-127.77) (  -0.63,-130.58)  320.81                80
 01/03/2023   22:20:50   (   0.00,-127.79) (   0.37,-126.14)  188.35                80
 01/05/2023   10:43:17   (  -0.01,-127.90) (   0.81,-131.55)  415.48                80
 01/06/2023   10:27:37   (   0.00,-127.93) (  -0.19,-127.11)   93.61                80
 01/08/2023   22:31:52   (  -0.00,-127.93) (  -0.06,-128.10)   20.89                80
 01/09/2023   22:10:53   (  -0.01,-127.95) (   0.94,-123.67)  487.75                80
 01/11/2023   10:33:19   (   0.00,-128.05) (   0.24,-129.08)  117.07                80
 01/12/2023   10:17:39   (   0.01,-128.07) (  -0.77,-124.64)  391.56                80