Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 1 19.  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)
 01/19/2023   21:52:37   (  -0.02,-130.05) (   0.74,-126.67)  385.49                80
 01/21/2023   10:11:41   (   0.03,-129.43) (   0.58,-131.91)  282.81                80
 01/22/2023   09:55:34   (   0.03,-129.01) (  -0.36,-127.36)  188.41                80
 01/23/2023   22:14:47   (  -0.04,-128.36) (  -1.01,-132.62)  486.62                80
 01/24/2023   21:56:00   (  -0.03,-127.94) (  -0.06,-128.08)   15.53                80
 01/25/2023   21:39:54   (  -0.03,-127.52) (   0.89,-123.53)  455.54                80
 01/27/2023   09:58:57   (   0.04,-126.89) (   0.48,-128.76)  213.18                80
 01/28/2023   09:42:51   (   0.04,-126.48) (  -0.47,-124.21)  257.95                80
 01/29/2023   22:02:03   (  -0.04,-125.82) (  -0.87,-129.48)  417.02                80
 01/30/2023   21:45:55   (  -0.04,-125.40) (   0.03,-124.92)   53.73                80