Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 9 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/23/2023   19:17:00   (   0.30, 104.72) (   0.42, 104.25)   54.70                80
 09/25/2023   07:39:33   (  -0.27, 103.11) (  -1.28,  98.77)  495.51                80
 09/26/2023   07:18:33   (  -0.29, 102.05) (  -0.04, 103.17)  128.00                80
 09/27/2023   19:43:37   (   0.26, 100.43) (   0.89,  97.73)  308.99                80
 09/28/2023   19:22:37   (   0.28,  99.38) (  -0.36, 102.13)  314.25                80
 09/30/2023   07:47:50   (  -0.26,  97.75) (  -0.48,  96.65)  124.53                80
 10/02/2023   19:49:13   (   0.26,  95.05) (   0.13,  95.62)   64.95                80
 10/04/2023   08:14:25   (  -0.23,  93.42) (  -1.00,  90.14)  374.25                80
 10/05/2023   07:53:24   (  -0.25,  92.35) (   0.26,  94.55)  251.06                80
 10/06/2023   20:18:29   (   0.22,  90.70) (   0.59,  89.10)  182.38                80