Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 6 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)
 07/03/2021   08:49:03   (  78.19,  24.97) 07/03/2021   08:47:56  (  78.19,  22.12)   64.76                67
 07/03/2021   09:39:54   ( -78.44,-169.20) 07/03/2021   09:38:51  ( -78.43,-169.08)    3.02                63
 07/03/2021   10:30:38   (  78.42,  -1.75) 07/03/2021   10:29:49  (  78.45,  -1.68)    3.81                49
 07/03/2021   11:21:23   ( -78.45, 165.42) 07/03/2021   11:20:51  ( -78.44, 165.50)    1.82                32
 07/03/2021   12:12:08   (  78.46, -27.36) 07/03/2021   12:11:50  (  78.43, -27.35)    3.84                18
 07/03/2021   13:02:52   ( -78.45, 140.03) 07/03/2021   13:02:51  ( -78.45, 140.07)    1.11                 1
 07/03/2021   13:53:37   (  78.46, -52.75) 07/03/2021   13:53:50  (  78.44, -52.77)    2.96                13
 07/03/2021   14:44:21   ( -78.45, 114.65) 07/03/2021   14:44:51  ( -78.47, 114.65)    1.68                30
 07/03/2021   15:35:06   (  78.47, -78.13) 07/03/2021   15:35:50  (  78.45, -78.20)    2.55                44
 07/03/2021   16:25:50   ( -78.45,  89.27) 07/03/2021   16:26:51  ( -78.48,  89.23)    2.83                61
 07/03/2021   17:16:35   (  78.47,-103.51) 07/03/2021   17:17:50  (  78.46,-103.63)    2.79                75