Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 6 2.  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   21:11:12   (  78.31,-161.41) 06/05/2021   21:10:03  (  78.30,-163.76)   53.00                69
 06/05/2021   22:02:01   ( -78.51,   4.69) 06/05/2021   22:00:53  ( -78.51,   4.85)    3.64                68
 06/05/2021   22:52:46   (  78.50, 172.08) 06/05/2021   22:51:58  (  78.49, 171.99)    2.00                48
 06/05/2021   23:43:30   ( -78.51, -20.69) 06/05/2021   23:42:53  ( -78.52, -20.56)    2.91                37
 06/06/2021   00:34:15   (  78.50, 146.70) 06/06/2021   00:33:58  (  78.51, 146.57)    2.79                17
 06/06/2021   01:24:59   ( -78.52, -46.07) 06/06/2021   01:24:53  ( -78.53, -45.98)    2.75                 6
 06/06/2021   02:15:45   (  78.54, 121.08) 06/06/2021   02:15:58  (  78.52, 121.16)    3.00                13
 06/06/2021   03:06:27   ( -78.52, -71.45) 06/06/2021   03:06:52  ( -78.54, -71.40)    3.23                25
 06/06/2021   03:57:13   (  78.54,  95.70) 06/06/2021   03:57:57  (  78.53,  95.74)    1.64                44
 06/06/2021   04:47:57   ( -78.56, -97.07) 06/06/2021   04:48:53  ( -78.52, -97.05)    4.01                56
 06/06/2021   05:38:42   (  78.55,  70.32) 06/06/2021   05:39:57  (  78.54,  70.32)    0.35                75