Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 5 27.  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,-161.30) 06/05/2021   21:10:03  (  78.28,-163.91)   58.87                68
 06/05/2021   22:02:00   ( -78.49,   4.81) 06/05/2021   22:00:53  ( -78.49,   4.72)    2.09                67
 06/05/2021   22:52:46   (  78.52, 171.96) 06/05/2021   22:51:57  (  78.51, 172.08)    2.95                49
 06/05/2021   23:43:29   ( -78.49, -20.57) 06/05/2021   23:42:53  ( -78.50, -20.70)    2.92                36
 06/06/2021   00:34:15   (  78.52, 146.58) 06/06/2021   00:33:57  (  78.52, 146.66)    1.82                18
 06/06/2021   01:24:59   ( -78.53, -46.18) 06/06/2021   01:24:53  ( -78.51, -46.11)    2.77                 6
 06/06/2021   02:15:44   (  78.52, 121.20) 06/06/2021   02:15:57  (  78.53, 121.24)    1.28                13
 06/06/2021   03:06:28   ( -78.54, -71.56) 06/06/2021   03:06:53  ( -78.52, -71.53)    1.38                25
 06/06/2021   03:57:13   (  78.53,  95.81) 06/06/2021   03:57:57  (  78.54,  95.82)    1.92                44
 06/06/2021   04:47:57   ( -78.54, -96.94) 06/06/2021   04:48:53  ( -78.54, -96.95)    0.12                56
 06/06/2021   05:38:43   (  78.57,  70.20) 06/06/2021   05:39:57  (  78.55,  70.41)    4.67                74