Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 5 11.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 05/14/2022   08:23:38   ( -71.89,-127.00) 05/14/2022   08:24:18  ( -71.90,-126.95)    1.84                40
 05/14/2022   09:14:22   (  71.79,  40.51) 05/14/2022   09:13:45  (  71.80,  40.54)    2.06                37
 05/16/2022   23:50:44   (  71.88,-178.73) 05/16/2022   23:51:21  (  71.86,-178.77)    3.17                37
 05/17/2022   00:41:28   ( -71.81, -11.28) 05/17/2022   00:40:50  ( -71.80, -11.24)    2.23                38
 05/19/2022   15:17:50   ( -71.91, 129.48) 05/19/2022   15:18:25  ( -71.89, 129.53)    2.23                35
 05/19/2022   16:08:34   (  71.81, -63.03) 05/19/2022   16:07:52  (  71.80, -63.00)    1.57                42
 05/22/2022   06:44:56   (  71.91,  77.72) 05/22/2022   06:45:27  (  71.88,  77.75)    3.36                31
 05/22/2022   07:35:39   ( -71.78,-114.73) 05/22/2022   07:34:57  ( -71.77,-114.80)    2.76                42
 05/24/2022   22:12:00   ( -71.89,  26.01) 05/24/2022   22:12:30  ( -71.90,  26.02)    1.51                30
 05/24/2022   23:02:44   (  71.79,-166.50) 05/24/2022   23:01:57  (  71.80,-166.51)    0.84                47