Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 5 13.  Predictions up to the next  14.0 days:

     Date     Time(HIMAWARI-9)   HIMAWARI-9 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 05/14/2025   03:54:08   (   0.00, 140.76) (   0.48, 142.99)  254.37                80
 05/15/2025   16:15:58   (  -0.01, 140.74) (   0.68, 137.71)  345.78                80
 05/16/2025   15:54:35   (  -0.01, 140.74) (  -0.34, 142.23)  170.63                80
 05/18/2025   04:16:32   (   0.02, 140.73) (  -0.85, 136.93)  433.82                80
 05/19/2025   04:00:29   (   0.01, 140.72) (   0.17, 141.45)   83.41                80
 05/21/2025   16:00:55   (  -0.01, 140.68) (   0.01, 140.70)    3.68                80
 05/24/2025   04:04:08   (   0.02, 140.64) (  -0.17, 139.92)   83.14                80
 05/25/2025   03:48:05   (   0.02, 140.62) (   0.85, 144.44)  434.86                80
 05/26/2025   16:09:55   (  -0.02, 140.59) (   0.28, 139.16)  162.57                80
 05/27/2025   15:48:31   (  -0.02, 140.57) (  -0.69, 143.69)  355.44                80