Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 5 29.  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   (  78.29,-161.33) 06/05/2021   21:10:03  (  78.27,-163.94)   59.06                68
 06/05/2021   22:02:00   ( -78.50,   4.79) 06/05/2021   22:00:53  ( -78.48,   4.69)    2.62                67
 06/05/2021   22:52:46   (  78.52, 171.94) 06/05/2021   22:51:57  (  78.50, 172.05)    3.29                49
 06/05/2021   23:43:29   ( -78.50, -20.59) 06/05/2021   23:42:53  ( -78.50, -20.73)    3.04                36
 06/06/2021   00:34:15   (  78.52, 146.56) 06/06/2021   00:33:57  (  78.51, 146.63)    1.96                18
 06/06/2021   01:24:59   ( -78.54, -46.20) 06/06/2021   01:24:53  ( -78.51, -46.15)    3.49                 6
 06/06/2021   02:15:44   (  78.53, 121.17) 06/06/2021   02:15:57  (  78.53, 121.21)    0.81                13
 06/06/2021   03:06:28   ( -78.54, -71.58) 06/06/2021   03:06:53  ( -78.52, -71.56)    2.16                25
 06/06/2021   03:57:13   (  78.53,  95.79) 06/06/2021   03:57:57  (  78.54,  95.79)    1.10                44
 06/06/2021   04:47:57   ( -78.54, -96.96) 06/06/2021   04:48:53  ( -78.53, -96.98)    1.00                56
 06/06/2021   05:38:43   (  78.57,  70.18) 06/06/2021   05:39:57  (  78.55,  70.38)    4.77                74