Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2021 4 10.  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)
 04/11/2021   15:30:06   (   0.12,-128.17) (   0.90,-131.44)  374.55                80
 04/12/2021   15:18:23   (   0.12,-128.14) (   0.24,-128.58)   50.40                80
 04/13/2021   15:03:59   (   0.11,-128.12) (  -0.42,-125.71)  273.69                80
 04/16/2021   03:24:52   (  -0.11,-127.94) (  -0.76,-130.64)  308.87                80
 04/17/2021   03:15:49   (  -0.11,-127.91) (  -0.08,-127.78)   14.76                80
 04/18/2021   03:04:05   (  -0.10,-127.88) (   0.60,-124.92)  338.22                80
 04/20/2021   15:24:58   (   0.10,-127.90) (   0.58,-129.85)  224.36                80
 04/21/2021   15:10:35   (   0.10,-127.86) (  -0.09,-126.99)   98.64                80
 04/22/2021   14:58:51   (   0.10,-127.82) (  -0.76,-124.13)  421.52                80