Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 1 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 01/22/2023   09:52:41   (   0.01,-125.34) (   0.41,-127.19)  210.50                80
 01/23/2023   09:36:32   (   0.01,-124.18) (  -0.35,-122.60)  180.52                80
 01/25/2023   21:36:51   (  -0.01,-121.27) (  -0.48,-123.23)  223.41                80
 01/26/2023   21:20:41   (  -0.01,-120.12) (   0.30,-118.64)  167.78                80
 01/29/2023   09:20:52   (   0.01,-117.19) (   0.47,-119.24)  234.39                80
 01/30/2023   09:04:43   (   0.01,-116.03) (  -0.31,-114.66)  156.53                80
 02/01/2023   21:05:01   (  -0.02,-113.11) (  -0.49,-115.29)  248.17                80
 02/02/2023   20:48:51   (  -0.02,-111.95) (   0.24,-110.69)  142.62                80