Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 3 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)
 03/29/2021   06:38:30   ( -78.65,-125.69) 03/29/2021   06:37:21  ( -78.67,-125.81)    3.28                69
 03/29/2021   07:29:15   (  78.68,  41.45) 03/29/2021   07:28:15  (  78.68,  41.53)    1.72                60
 03/29/2021   08:20:00   ( -78.69,-151.31) 03/29/2021   08:19:21  ( -78.69,-151.21)    2.21                39
 03/29/2021   09:10:44   (  78.68,  16.08) 03/29/2021   09:10:15  (  78.69,  16.13)    2.02                29
 03/29/2021   10:01:29   ( -78.69,-176.68) 03/29/2021   10:01:21  ( -78.70,-176.61)    1.83                 8
 03/29/2021   10:52:13   (  78.68,  -9.30) 03/29/2021   10:52:15  (  78.71,  -9.27)    3.11                 2
 03/29/2021   11:42:58   ( -78.69, 157.94) 03/29/2021   11:43:21  ( -78.71, 157.99)    2.52                23
 03/29/2021   12:33:42   (  78.72, -34.92) 03/29/2021   12:34:15  (  78.69, -34.91)    3.51                33
 03/29/2021   13:24:26   ( -78.69, 132.56) 03/29/2021   13:25:20  ( -78.73, 132.59)    3.73                54
 03/29/2021   14:15:11   (  78.72, -60.29) 03/29/2021   14:16:15  (  78.70, -60.31)    2.12                64