Simultaneous Nadir Overpasses (SNOs) between FY3D and METOP-A
TLE Epoch: 2021 11 28.  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)
 11/30/2021   07:18:45   ( -77.74,-128.99) 11/30/2021   07:19:34  ( -77.74,-128.89)    2.46                49
 11/30/2021   08:09:29   (  77.67,  38.64) 11/30/2021   08:08:55  (  77.71,  38.64)    4.01                34
 12/02/2021   15:59:53   (  77.70, -79.07) 12/02/2021   16:00:03  (  77.68, -79.14)    2.18                10
 12/04/2021   23:50:18   (  77.73, 163.20) 12/04/2021   23:51:10  (  77.69, 163.20)    3.97                52
 12/05/2021   00:41:02   ( -77.67, -29.23) 12/05/2021   00:40:06  ( -77.68, -29.08)    3.55                56
 12/07/2021   08:31:27   ( -77.66,-146.75) 12/07/2021   08:31:05  ( -77.68,-146.74)    2.26                22
 12/07/2021   09:22:07   (  77.40,  21.79) 12/07/2021   09:20:58  (  77.37,  19.46)   56.67                69
 12/09/2021   16:21:54   ( -77.69,  95.50) 12/09/2021   16:22:04  ( -77.68,  95.60)    2.82                10
 12/09/2021   17:12:39   (  77.64, -96.95) 12/09/2021   17:11:58  (  77.64, -97.04)    2.23                41
 12/12/2021   00:12:21   ( -77.68, -22.07) 12/12/2021   00:13:03  ( -77.68, -22.04)    0.80                42