Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and NOAA-19
TLE Epoch: 2017 12 18.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-20) NOAA-20 Lat/Lon Date Time(NOAA-19) NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 12/22/2017   00:07:14   ( -80.71, -49.27) 12/22/2017   00:06:01  ( -80.71, -49.16)    2.03                73
 12/22/2017   00:57:57   (  80.70, 118.08) 12/22/2017   00:57:03  (  80.70, 117.94)    2.63                54
 12/22/2017   01:48:41   ( -80.70, -74.57) 12/22/2017   01:48:02  ( -80.71, -74.53)    1.32                39
 12/22/2017   02:39:25   (  80.72,  92.44) 12/22/2017   02:39:04  (  80.71,  92.56)    2.61                21
 12/22/2017   03:30:09   ( -80.72,-100.21) 12/22/2017   03:30:04  ( -80.70,-100.26)    1.88                 5
 12/22/2017   04:20:52   (  80.72,  67.15) 12/22/2017   04:21:05  (  80.71,  67.18)    0.74                13
 12/22/2017   05:11:36   ( -80.71,-125.49) 12/22/2017   05:12:05  ( -80.71,-125.63)    2.62                29
 12/22/2017   06:02:19   (  80.71,  41.87) 12/22/2017   06:03:06  (  80.72,  41.80)    1.37                47