Simultaneous Nadir Overpasses (SNOs) between FY3D and METOP-A
TLE Epoch: 2021 11 22.  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)
 11/22/2021   11:29:21   ( -77.72, 168.38) 11/22/2021   11:28:45  ( -77.74, 168.52)    3.56                36
 11/26/2021   10:14:58   ( -78.17,-175.30) 11/26/2021   10:16:03  ( -78.02,-171.94)   78.89                65
 11/26/2021   11:05:34   (  77.74,  -5.74) 11/26/2021   11:05:57  (  77.75,  -5.70)    1.15                23
 11/26/2021   11:56:18   ( -77.71, 161.73) 11/26/2021   11:55:57  ( -77.71, 161.63)    2.51                21
 11/26/2021   12:47:00   (  77.51, -30.01) 11/26/2021   12:45:50  (  77.48, -31.81)   43.37                70
 11/30/2021   11:32:35   (  77.75, -12.50) 11/30/2021   11:33:17  (  77.75, -12.48)    0.51                42
 11/30/2021   12:23:19   ( -77.71, 155.02) 11/30/2021   12:23:09  ( -77.71, 154.90)    3.07                10
 11/30/2021   13:14:05   (  77.68, -37.55) 11/30/2021   13:13:05  (  77.70, -37.63)    3.06                60
 12/04/2021   11:59:38   (  77.77, -19.32) 12/04/2021   12:00:36  (  77.74, -19.29)    2.69                58
 12/04/2021   12:50:22   ( -77.71, 148.25) 12/04/2021   12:50:20  ( -77.72, 148.16)    2.09                 2