Simultaneous Nadir Overpasses (SNOs) between FY3D and METOP-A
TLE Epoch: 2021 1 11.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(METOP-A) METOP-A Lat/Lon    Distance(km)  Time Diff(sec)
 01/24/2021   22:05:03   ( -77.11,  10.14) 01/24/2021   22:06:07  ( -77.07,  14.14)   99.57                64
 01/24/2021   22:55:43   (  76.87, 178.43) 01/24/2021   22:56:52  (  76.83,-179.46)   53.40                69
 01/24/2021   23:46:25   ( -76.80, -13.98) 01/24/2021   23:47:36  ( -76.74, -12.48)   38.83                71
 01/25/2021   00:37:06   (  76.60, 154.10) 01/25/2021   00:38:19  (  76.59, 154.28)    4.95                73
 01/25/2021   01:27:49   ( -76.58, -38.49) 01/25/2021   01:29:01  ( -76.59, -38.39)    2.80                72
 01/25/2021   02:18:34   (  76.56, 128.90) 01/25/2021   02:19:41  (  76.57, 128.87)    1.30                67