Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 8 26.  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)
 08/27/2021   08:55:25   ( -78.02,-155.31) 08/27/2021   08:54:18  ( -78.01,-158.35)   70.12                67
 08/27/2021   09:46:17   (  78.30,  10.46) 08/27/2021   09:45:09  (  78.27,  10.49)    2.58                68
 08/27/2021   10:37:01   ( -78.29, 177.79) 08/27/2021   10:36:11  ( -78.28, 177.78)    1.32                50
 08/27/2021   11:27:46   (  78.30, -14.93) 08/27/2021   11:27:09  (  78.28, -14.94)    1.74                37
 08/27/2021   12:18:30   ( -78.30, 152.40) 08/27/2021   12:18:11  ( -78.29, 152.34)    1.56                19
 08/27/2021   13:09:15   (  78.30, -40.31) 08/27/2021   13:09:09  (  78.29, -40.38)    1.77                 6
 08/27/2021   13:59:59   ( -78.30, 127.02) 08/27/2021   14:00:11  ( -78.30, 126.90)    2.67                12
 08/27/2021   14:50:44   (  78.31, -65.70) 08/27/2021   14:51:09  (  78.30, -65.82)    2.65                25
 08/27/2021   15:41:28   ( -78.34, 101.41) 08/27/2021   15:42:10  ( -78.31, 101.46)    3.68                42
 08/27/2021   16:32:12   (  78.31, -91.09) 08/27/2021   16:33:08  (  78.31, -91.25)    3.83                56
 08/27/2021   17:22:57   ( -78.34,  76.02) 08/27/2021   17:24:10  ( -78.32,  76.02)    2.81                73