Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 4 23.  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)
 04/24/2025   16:09:17   (   0.02, 140.74) (   0.35, 139.34)  160.28                80
 04/25/2025   15:47:54   (   0.02, 140.73) (  -0.70, 143.86)  356.42                80
 04/27/2025   04:09:53   (  -0.02, 140.71) (  -0.47, 138.54)  246.28                80
 04/28/2025   03:53:49   (  -0.01, 140.70) (   0.53, 143.07)  270.84                80
 04/29/2025   16:15:40   (   0.01, 140.68) (   0.67, 137.79)  329.33                80
 04/30/2025   15:54:16   (   0.01, 140.67) (  -0.33, 142.32)  187.80                80
 05/02/2025   04:16:14   (  -0.02, 140.64) (  -0.82, 137.00)  414.28                80
 05/03/2025   04:00:11   (  -0.02, 140.62) (   0.18, 141.53)  103.67                80
 05/04/2025   16:22:01   (   0.03, 140.59) (   1.00, 136.25)  494.48                80
 05/05/2025   16:00:38   (   0.03, 140.56) (  -0.00, 140.78)   23.91                80