Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 1 22.  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)
 01/23/2023   09:36:32   (   0.01,-124.18) (  -0.37,-122.60)  180.55                80
 01/25/2023   21:36:51   (  -0.01,-121.27) (  -0.46,-123.23)  223.38                80
 01/26/2023   21:20:41   (  -0.01,-120.12) (   0.31,-118.64)  167.78                80
 01/29/2023   09:20:52   (   0.01,-117.19) (   0.46,-119.25)  234.36                80
 01/30/2023   09:04:43   (   0.01,-116.03) (  -0.32,-114.66)  156.60                80
 02/01/2023   21:05:01   (  -0.02,-113.11) (  -0.53,-115.28)  248.13                80
 02/02/2023   20:48:51   (  -0.02,-111.95) (   0.26,-110.70)  142.65                80
 02/05/2023   08:49:01   (   0.02,-109.01) (   0.54,-111.29)  260.14                80