Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 12 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/02/2023   10:08:44   (   0.03,  61.33) (   0.23,  62.34)  115.22                80
 12/03/2023   22:30:59   (  -0.05,  61.21) (   0.93,  56.98)  482.91                80
 12/04/2023   22:09:53   (  -0.04,  61.20) (  -0.11,  61.45)   29.18                80
 12/07/2023   10:13:49   (   0.05,  61.23) (  -0.11,  60.54)   78.21                80
 12/08/2023   09:58:01   (   0.04,  61.21) (   0.88,  65.02)  434.34                80
 12/09/2023   22:20:17   (  -0.05,  61.09) (   0.25,  59.66)  163.53                80
 12/10/2023   21:59:09   (  -0.04,  61.09) (  -0.74,  64.13)  347.97                80
 12/12/2023   10:21:31   (   0.05,  61.16) (  -0.50,  58.76)  274.00                80
 12/13/2023   10:05:44   (   0.04,  61.15) (   0.50,  63.23)  237.61                80
 12/14/2023   22:27:58   (  -0.06,  61.04) (   0.66,  57.88)  360.28                80
 12/15/2023   22:06:51   (  -0.05,  61.04) (  -0.35,  62.36)  150.33                80