Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2018 5 25.  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)
 05/26/2018   00:53:30   (   0.06,-135.16) (   0.53,-133.06)  239.91                80
 05/28/2018   13:12:04   (  -0.08,-135.08) (   0.64,-138.09)  344.91                80
 05/29/2018   13:00:31   (  -0.08,-135.04) (  -0.02,-135.28)   27.00                80
 05/30/2018   12:51:39   (  -0.08,-135.01) (  -0.69,-132.47)  290.74                80
 06/02/2018   01:10:25   (   0.11,-134.92) (  -0.49,-137.55)  299.69                80
 06/03/2018   01:01:31   (   0.11,-134.89) (   0.14,-134.73)   17.84                80
 06/04/2018   00:49:58   (   0.10,-134.85) (   0.77,-131.91)  335.35                80
 06/06/2018   13:08:34   (  -0.12,-134.74) (   0.40,-136.95)  252.84                80
 06/07/2018   12:59:41   (  -0.12,-134.70) (  -0.27,-134.14)   64.01                80
 06/08/2018   12:48:08   (  -0.12,-134.65) (  -0.88,-131.32)  380.68                80