Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 10 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)
 10/07/2021   16:03:27   ( -77.85,  98.82) 10/07/2021   16:02:21  ( -77.87,  95.42)   79.65                66
 10/07/2021   16:54:21   (  78.19, -95.70) 10/07/2021   16:53:18  (  78.16, -95.64)    3.66                63
 10/07/2021   17:45:03   ( -78.17,  71.75) 10/07/2021   17:44:12  ( -78.18,  71.72)    0.90                51
 10/07/2021   18:35:49   (  78.20,-121.09) 10/07/2021   18:35:17  (  78.17,-121.09)    2.92                32
 10/07/2021   19:26:32   ( -78.18,  46.36) 10/07/2021   19:26:12  ( -78.19,  46.28)    2.24                20
 10/07/2021   20:17:18   (  78.20,-146.48) 10/07/2021   20:17:17  (  78.18,-146.54)    2.78                 1
 10/07/2021   21:08:02   ( -78.22,  20.75) 10/07/2021   21:08:12  ( -78.20,  20.83)    3.11                10
 10/07/2021   21:58:47   (  78.20,-171.87) 10/07/2021   21:59:16  (  78.22,-171.76)    3.30                29
 10/07/2021   22:49:31   ( -78.22,  -4.64) 10/07/2021   22:50:12  ( -78.20,  -4.62)    2.04                41
 10/07/2021   23:40:16   (  78.21, 162.75) 10/07/2021   23:41:16  (  78.23, 162.79)    2.96                60
 10/08/2021   00:31:00   ( -78.22, -30.03) 10/08/2021   00:32:12  ( -78.21, -30.06)    1.66                72