Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 7 20.  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)
 07/21/2025   04:17:10   (   0.01, 140.76) (  -0.87, 136.77)  454.61                80
 07/22/2025   04:01:06   (   0.01, 140.76) (   0.14, 141.30)   61.40                80
 07/24/2025   16:04:09   (   0.00, 140.77) (   0.05, 140.56)   23.61                80
 07/25/2025   15:42:44   (   0.01, 140.77) (  -0.96, 145.09)  493.09                80
 07/27/2025   04:04:42   (  -0.01, 140.75) (  -0.22, 139.78)  109.46                80
 07/28/2025   03:48:37   (  -0.01, 140.74) (   0.80, 144.31)  408.05                80
 07/29/2025   16:10:24   (   0.01, 140.72) (   0.41, 139.05)  191.15                80
 07/30/2025   15:49:00   (   0.01, 140.71) (  -0.60, 143.58)  326.63                80
 08/01/2025   04:10:57   (  -0.02, 140.68) (  -0.56, 138.27)  274.74                80
 08/02/2025   03:54:53   (  -0.02, 140.66) (   0.46, 142.80)  243.49                80