Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 1 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/06/2023   10:27:37   (   0.00,-127.92) (  -0.18,-127.11)   93.06                80
 01/08/2023   22:31:52   (  -0.00,-127.91) (  -0.07,-128.10)   21.87                80
 01/09/2023   22:10:52   (  -0.01,-127.93) (   0.94,-123.66)  486.64                80
 01/11/2023   10:33:18   (   0.00,-128.03) (   0.23,-129.07)  118.64                80
 01/12/2023   10:17:39   (   0.01,-128.05) (  -0.78,-124.64)  389.78                80
 01/13/2023   22:40:13   (  -0.00,-128.02) (  -0.46,-130.07)  233.72                80
 01/14/2023   22:19:14   (  -0.00,-128.04) (   0.55,-125.63)  274.18                80
 01/16/2023   10:41:39   (   0.00,-128.12) (   0.67,-131.03)  332.53                80
 01/17/2023   10:26:00   (   0.00,-128.13) (  -0.34,-126.60)  175.14                80
 01/18/2023   22:48:34   (  -0.01,-128.09) (  -0.88,-132.03)  449.11                80
 01/19/2023   22:27:33   (  -0.01,-128.10) (   0.08,-127.59)   57.72                80