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   (  78.29,-161.34) 06/05/2021   21:10:03  (  78.28,-163.93)   58.55                68
 06/05/2021   22:02:00   ( -78.50,   4.79) 06/05/2021   22:00:53  ( -78.49,   4.71)    1.93                67
 06/05/2021   22:52:45   (  78.49, 172.15) 06/05/2021   22:51:57  (  78.50, 172.06)    2.84                48
 06/05/2021   23:43:29   ( -78.50, -20.59) 06/05/2021   23:42:53  ( -78.50, -20.70)    2.45                36
 06/06/2021   00:34:15   (  78.53, 146.54) 06/06/2021   00:33:57  (  78.52, 146.64)    2.49                18
 06/06/2021   01:24:59   ( -78.54, -46.20) 06/06/2021   01:24:53  ( -78.51, -46.12)    3.44                 6
 06/06/2021   02:15:44   (  78.53, 121.16) 06/06/2021   02:15:57  (  78.53, 121.22)    1.35                13
 06/06/2021   03:06:28   ( -78.54, -71.58) 06/06/2021   03:06:53  ( -78.52, -71.54)    2.06                25
 06/06/2021   03:57:13   (  78.53,  95.78) 06/06/2021   03:57:57  (  78.54,  95.80)    1.08                44
 06/06/2021   04:47:57   ( -78.54, -96.97) 06/06/2021   04:48:53  ( -78.54, -96.95)    0.68                56
 06/06/2021   05:38:43   (  78.57,  70.17) 06/06/2021   05:39:57  (  78.55,  70.39)    5.34                74