Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 5 24.  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   (  78.30,-161.39) 06/05/2021   21:10:02  (  78.30,-163.76)   53.25                69
 06/05/2021   22:02:00   ( -78.51,   4.73) 06/05/2021   22:00:53  ( -78.48,   4.66)    3.46                67
 06/05/2021   22:52:45   (  78.50, 172.09) 06/05/2021   22:51:57  (  78.49, 172.00)    2.19                48
 06/05/2021   23:43:29   ( -78.51, -20.65) 06/05/2021   23:42:53  ( -78.49, -20.76)    3.11                36
 06/06/2021   00:34:14   (  78.50, 146.71) 06/06/2021   00:33:57  (  78.51, 146.58)    3.08                17
 06/06/2021   01:24:58   ( -78.51, -46.03) 06/06/2021   01:24:53  ( -78.50, -46.18)    3.35                 5
 06/06/2021   02:15:44   (  78.54, 121.10) 06/06/2021   02:15:57  (  78.52, 121.16)    2.69                13
 06/06/2021   03:06:28   ( -78.55, -71.64) 06/06/2021   03:06:53  ( -78.51, -71.59)    3.96                25
 06/06/2021   03:57:13   (  78.54,  95.72) 06/06/2021   03:57:57  (  78.53,  95.74)    1.35                44
 06/06/2021   04:47:57   ( -78.55, -97.02) 06/06/2021   04:48:53  ( -78.53, -97.01)    2.71                56
 06/06/2021   05:38:42   (  78.54,  70.34) 06/06/2021   05:39:57  (  78.54,  70.32)    0.30                75