Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 6 3.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(NOAA-19) NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 06/05/2021   21:11:11   (  78.28,-161.26) 06/05/2021   21:10:03  (  78.29,-163.83)   58.03                68
 06/05/2021   22:02:00   ( -78.49,   4.84) 06/05/2021   22:00:53  ( -78.50,   4.78)    1.86                67
 06/05/2021   22:52:46   (  78.51, 172.01) 06/05/2021   22:51:58  (  78.48, 171.92)    3.49                48
 06/05/2021   23:43:29   ( -78.49, -20.54) 06/05/2021   23:42:53  ( -78.51, -20.64)    3.22                36
 06/06/2021   00:34:15   (  78.51, 146.62) 06/06/2021   00:33:58  (  78.50, 146.51)    3.22                17
 06/06/2021   01:24:59   ( -78.53, -46.15) 06/06/2021   01:24:53  ( -78.52, -46.05)    2.22                 6
 06/06/2021   02:15:44   (  78.52, 121.24) 06/06/2021   02:15:58  (  78.51, 121.09)    3.51                14
 06/06/2021   03:06:28   ( -78.53, -71.53) 06/06/2021   03:06:53  ( -78.53, -71.47)    1.40                25
 06/06/2021   03:57:14   (  78.56,  95.63) 06/06/2021   03:57:58  (  78.52,  95.67)    3.96                44
 06/06/2021   04:47:57   ( -78.53, -96.91) 06/06/2021   04:48:53  ( -78.55, -96.89)    1.67                56
 06/06/2021   05:38:43   (  78.56,  70.25) 06/06/2021   05:39:58  (  78.53,  70.25)    2.76                75