Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2020 12 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-A Lat/Lon    Distance(km)  Time Diff(sec)
 12/20/2020   16:56:51   (   0.28,-128.23) (   0.31,-128.36)   15.11                80
 12/23/2020   04:57:53   (  -0.28,-128.27) (  -0.22,-128.03)   28.23                80
 12/24/2020   17:14:05   (   0.26,-128.26) (   1.22,-132.63)  497.91                80
 12/25/2020   16:56:06   (   0.27,-128.26) (   0.12,-127.65)   69.61                80
 12/27/2020   05:12:27   (  -0.26,-128.28) (  -1.13,-132.29)  456.32                80
 12/28/2020   04:54:28   (  -0.27,-128.28) (  -0.03,-127.31)  111.07                80
 12/29/2020   17:10:39   (   0.25,-128.25) (   1.08,-131.90)  416.22                80
 12/30/2020   16:52:40   (   0.27,-128.25) (  -0.01,-126.93)  150.54                80
 01/01/2021   05:09:01   (  -0.26,-128.26) (  -0.99,-131.57)  376.85                80
 01/02/2021   04:51:01   (  -0.28,-128.25) (   0.11,-126.59)  189.87                80