Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2018 12 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 12/19/2018   01:05:22   (   0.15,-128.56) (  -0.06,-129.32)   87.69                80
 12/20/2018   00:56:28   (   0.14,-128.56) (   0.65,-126.51)  235.17                80
 12/22/2018   13:14:55   (  -0.15,-128.66) (   0.52,-131.51)  325.43                80
 12/23/2018   13:04:24   (  -0.14,-128.65) (  -0.15,-128.68)    3.47                16
 12/24/2018   12:54:23   (  -0.13,-128.64) (  -0.75,-125.84)  319.16                80
 12/27/2018   01:15:44   (   0.14,-128.51) (  -0.41,-130.90)  273.29                80
 12/28/2018   01:01:29   (   0.13,-128.49) (   0.24,-128.07)   48.35                80
 12/29/2018   00:49:53   (   0.13,-128.48) (   0.89,-125.24)  369.94                80
 12/31/2018   13:10:59   (  -0.13,-128.55) (   0.25,-130.24)  192.70                80
 01/01/2019   13:02:04   (  -0.13,-128.54) (  -0.41,-127.41)  128.99                80