Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 3 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/30/2022   10:11:22   (   0.11,-128.36) (  -0.27,-126.56)  204.99                80
 03/31/2022   22:33:53   (  -0.11,-128.41) (  -0.90,-131.99)  408.37                80
 04/01/2022   22:18:09   (  -0.11,-128.43) (   0.09,-127.54)  101.22                80
 04/04/2022   10:19:25   (   0.11,-128.46) (   0.13,-128.47)    2.46                80
 04/06/2022   22:23:31   (  -0.11,-128.50) (  -0.35,-129.44)  107.25                80
 04/07/2022   22:07:48   (  -0.12,-128.51) (   0.70,-125.00)  401.65                80
 04/09/2022   10:30:08   (   0.12,-128.52) (   0.51,-130.38)  211.46                80
 04/10/2022   10:09:04   (   0.12,-128.53) (  -0.49,-125.93)  297.00                80
 04/11/2022   22:31:33   (  -0.12,-128.55) (  -0.78,-131.34)  318.84                80
 04/12/2022   22:15:49   (  -0.13,-128.55) (   0.22,-126.89)  189.60                80