Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 1 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/08/2023   22:31:52   (  -0.00,-127.92) (  -0.04,-128.11)   21.51                80
 01/09/2023   22:10:53   (  -0.01,-127.94) (   0.97,-123.67)  486.91                80
 01/11/2023   10:33:18   (   0.00,-128.03) (   0.25,-129.07)  118.41                80
 01/12/2023   10:17:39   (   0.01,-128.05) (  -0.75,-124.63)  390.04                80
 01/13/2023   22:40:13   (  -0.00,-128.02) (  -0.49,-130.06)  233.37                80
 01/14/2023   22:19:13   (  -0.00,-128.04) (   0.53,-125.63)  274.57                80
 01/16/2023   10:41:40   (   0.00,-128.12) (   0.64,-131.04)  332.17                80
 01/17/2023   10:25:59   (   0.00,-128.14) (  -0.31,-126.59)  175.55                80
 01/18/2023   22:48:33   (  -0.01,-128.10) (  -0.91,-132.03)  448.64                80
 01/19/2023   22:27:34   (  -0.01,-128.10) (   0.11,-127.59)   58.17                80