Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2019 12 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 12/20/2019   17:43:53   (  -0.12,-128.00) (  -1.00,-123.93)  463.20                80
 12/22/2019   06:05:35   (   0.11,-128.08) (   0.03,-128.54)   51.94                80
 12/24/2019   18:01:09   (  -0.10,-128.12) (  -0.13,-128.11)    3.24                80
 12/27/2019   05:59:32   (   0.10,-128.22) (   0.23,-127.71)   57.84                80
 12/28/2019   18:21:03   (  -0.08,-128.22) (   0.85,-132.26)  461.26                80
 12/29/2019   17:57:45   (  -0.09,-128.24) (  -0.28,-127.27)  110.38                80
 12/31/2019   06:19:27   (   0.07,-128.31) (  -0.70,-131.88)  405.40                80
 01/01/2020   05:56:08   (   0.08,-128.34) (   0.38,-126.88)  165.93                80
 01/02/2020   18:17:40   (  -0.06,-128.33) (   0.64,-131.43)  353.70                80