Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 2 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/08/2023   10:22:31   (   0.06,-128.28) (  -0.55,-125.49)  317.60                80
 02/09/2023   22:45:04   (  -0.06,-128.26) (  -0.65,-130.92)  303.54                80
 02/10/2023   22:24:04   (  -0.06,-128.25) (   0.35,-126.48)  202.22                80
 02/12/2023   10:46:28   (   0.06,-128.25) (   0.90,-131.87)  412.86                80
 02/13/2023   10:30:48   (   0.07,-128.24) (  -0.10,-127.42)   92.74                80
 02/15/2023   22:35:00   (  -0.08,-128.19) (  -0.14,-128.41)   24.50                80
 02/16/2023   22:13:59   (  -0.08,-128.18) (   0.87,-123.96)  480.11                80
 02/18/2023   10:36:23   (   0.08,-128.16) (   0.38,-129.35)  137.03                80
 02/19/2023   10:20:43   (   0.09,-128.14) (  -0.63,-124.91)  367.69                80
 02/20/2023   22:43:15   (  -0.09,-128.10) (  -0.59,-130.34)  254.85                80
 02/21/2023   22:22:15   (  -0.09,-128.08) (   0.42,-125.90)  249.56                80