Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 8 25.  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   08:55:24   ( -77.99,-155.20) 08/27/2021   08:54:17  ( -78.03,-158.22)   70.00                67
 08/27/2021   09:46:16   (  78.28,  10.58) 08/27/2021   09:45:08  (  78.29,  10.62)    2.21                68
 08/27/2021   10:37:00   ( -78.27, 177.91) 08/27/2021   10:36:10  ( -78.30, 177.91)    3.34                50
 08/27/2021   11:27:45   (  78.28, -14.81) 08/27/2021   11:27:08  (  78.30, -14.82)    2.78                37
 08/27/2021   12:18:30   ( -78.31, 152.30) 08/27/2021   12:18:10  ( -78.31, 152.47)    3.82                20
 08/27/2021   13:09:15   (  78.32, -40.42) 08/27/2021   13:09:08  (  78.31, -40.26)    3.74                 7
 08/27/2021   13:59:59   ( -78.32, 126.92) 08/27/2021   14:00:10  ( -78.32, 127.03)    2.63                11
 08/27/2021   14:50:44   (  78.32, -65.81) 08/27/2021   14:51:08  (  78.32, -65.69)    2.52                24
 08/27/2021   15:41:28   ( -78.32, 101.53) 08/27/2021   15:42:10  ( -78.33, 101.59)    1.78                42
 08/27/2021   16:32:13   (  78.33, -91.19) 08/27/2021   16:33:08  (  78.33, -91.13)    1.58                55
 08/27/2021   17:22:57   ( -78.32,  76.14) 08/27/2021   17:24:10  ( -78.34,  76.15)    1.82                73