Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 6 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/18/2020   22:03:31   (  -0.02,-127.74) (  -0.08,-127.91)   19.27                80
 06/21/2020   10:06:05   (   0.02,-127.90) (   0.19,-128.52)   72.00                80
 06/22/2020   09:44:29   (   0.01,-127.94) (  -0.88,-123.95)  453.83                80
 06/23/2020   22:08:49   (  -0.02,-127.94) (  -0.28,-129.19)  141.00                80
 06/24/2020   21:47:12   (  -0.01,-127.98) (   0.73,-124.60)  384.90                80
 06/26/2020   10:11:23   (   0.03,-128.09) (   0.39,-129.80)  195.10                80
 06/27/2020   09:49:46   (   0.02,-128.12) (  -0.62,-125.22)  330.30                80
 06/28/2020   22:14:04   (  -0.03,-128.12) (  -0.58,-130.44)  265.60                80
 06/29/2020   21:52:29   (  -0.02,-128.15) (   0.49,-125.87)  259.84                80