Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2023 5 18.  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)
 05/21/2023   02:42:00   ( -76.53, -49.60) 05/21/2023   02:40:47  ( -76.52, -50.43)   21.60                73
 05/21/2023   03:32:48   (  76.63, 117.35) 05/21/2023   03:31:40  (  76.62, 117.25)    2.69                68
 05/21/2023   04:23:34   ( -76.65, -75.43) 05/21/2023   04:22:43  ( -76.65, -75.38)    1.22                51
 05/21/2023   05:14:20   (  76.65,  91.87) 05/21/2023   05:13:38  (  76.67,  91.96)    2.79                42
 05/21/2023   06:05:06   ( -76.67,-100.91) 05/21/2023   06:04:42  ( -76.66,-100.85)    2.65                24
 05/21/2023   06:55:52   (  76.68,  66.38) 05/21/2023   06:55:37  (  76.67,  66.49)    2.80                15
 05/21/2023   07:46:37   ( -76.66,-126.22) 05/21/2023   07:46:41  ( -76.66,-126.33)    2.73                 4
 05/21/2023   08:37:23   (  76.66,  41.07) 05/21/2023   08:37:36  (  76.68,  41.01)    2.29                13
 05/21/2023   09:28:09   ( -76.68,-151.71) 05/21/2023   09:28:40  ( -76.67,-151.80)    3.19                31
 05/21/2023   10:18:55   (  76.69,  15.59) 05/21/2023   10:19:35  (  76.68,  15.54)    1.21                40
 05/21/2023   11:09:41   ( -76.71,-177.19) 05/21/2023   11:10:38  ( -76.71,-177.10)    2.41                57
 05/21/2023   12:00:27   (  76.71,  -9.90) 05/21/2023   12:01:34  (  76.69,  -9.93)    2.95                67
 05/21/2023   12:51:22   ( -77.12, 155.71) 05/21/2023   12:52:28  ( -77.10, 159.08)   83.80                66