Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 3 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/09/2022   09:57:34   (   0.06,-127.76) (  -0.93,-123.38)  498.92                80
 03/10/2022   22:22:43   (  -0.06,-127.81) (  -0.28,-128.80)  113.10                80
 03/11/2022   22:01:39   (  -0.06,-127.85) (   0.70,-124.35)  398.22                80
 03/13/2022   10:26:41   (   0.07,-127.91) (   0.47,-129.75)  209.21                80
 03/14/2022   10:05:37   (   0.07,-127.94) (  -0.51,-125.29)  301.77                80
 03/15/2022   22:30:47   (  -0.08,-127.98) (  -0.70,-130.71)  311.29                80
 03/16/2022   22:09:44   (  -0.08,-128.02) (   0.34,-126.27)  199.58                80
 03/18/2022   10:34:44   (   0.08,-128.07) (   0.87,-131.66)  408.31                80
 03/19/2022   10:13:41   (   0.08,-128.10) (  -0.11,-127.20)  102.18                80
 03/21/2022   22:17:48   (  -0.08,-128.16) (  -0.06,-128.19)    3.67                80