Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2021 11 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/13/2021   10:31:57   (   0.07,-128.44) (   0.98,-132.54)  466.87                80
 11/14/2021   10:15:39   (   0.08,-128.44) (  -0.05,-127.95)   56.74                80
 11/16/2021   22:15:36   (  -0.07,-128.42) (  -0.08,-128.56)   15.11                80
 11/19/2021   10:18:03   (   0.06,-128.41) (   0.24,-129.12)   81.82                80
 11/20/2021   10:01:44   (   0.08,-128.40) (  -0.79,-124.53)  441.08                80
 11/21/2021   22:20:39   (  -0.05,-128.38) (  -0.35,-129.74)  155.25                80
 11/22/2021   22:04:21   (  -0.06,-128.36) (   0.68,-125.15)  367.31                80
 11/24/2021   10:23:07   (   0.03,-128.35) (   0.46,-130.32)  224.20                80
 11/25/2021   10:06:48   (   0.05,-128.33) (  -0.51,-125.71)  297.94                80