Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 5 11.  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)
 05/13/2025   04:10:12   (  -0.00, 140.75) (  -0.53, 138.47)  260.50                80
 05/14/2025   03:54:08   (  -0.00, 140.74) (   0.48, 142.99)  256.03                80
 05/15/2025   16:15:58   (  -0.00, 140.72) (   0.68, 137.71)  343.81                80
 05/16/2025   15:54:35   (  -0.01, 140.72) (  -0.34, 142.23)  172.66                80
 05/18/2025   04:16:32   (   0.02, 140.71) (  -0.85, 136.93)  432.03                80
 05/19/2025   04:00:29   (   0.01, 140.70) (   0.17, 141.45)   85.19                80
 05/21/2025   16:00:55   (  -0.00, 140.66) (   0.02, 140.70)    5.75                80
 05/24/2025   04:04:09   (   0.02, 140.62) (  -0.12, 139.91)   81.12                80
 05/25/2025   03:48:06   (   0.02, 140.61) (   0.90, 144.43)  436.86                80