Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2020 12 10.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-19) NOAA-19 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/18/2020   23:15:54   ( -78.59, -19.98) 12/18/2020   23:17:02  ( -78.61, -17.28)   59.45                68
 12/19/2020   00:06:47   (  78.81, 148.84) 12/19/2020   00:07:52  (  78.78, 148.92)    3.04                65
 12/19/2020   00:57:48   ( -78.81, -43.89) 12/19/2020   00:58:37  ( -78.80, -43.87)    1.20                49
 12/19/2020   01:48:47   (  78.82, 123.46) 12/19/2020   01:49:22  (  78.79, 123.51)    3.73                35
 12/19/2020   02:39:48   ( -78.83, -69.28) 12/19/2020   02:40:07  ( -78.81, -69.28)    2.09                19
 12/19/2020   03:30:48   (  78.81,  97.83) 12/19/2020   03:30:53  (  78.83,  97.85)    3.22                 5
 12/19/2020   04:21:48   ( -78.84, -94.66) 12/19/2020   04:21:37  ( -78.81, -94.69)    3.16                11
 12/19/2020   05:12:48   (  78.82,  72.45) 12/19/2020   05:12:23  (  78.84,  72.44)    2.12                25
 12/19/2020   06:03:49   ( -78.82,-120.30) 12/19/2020   06:03:08  ( -78.86,-120.34)    3.84                41
 12/19/2020   06:54:48   (  78.84,  47.07) 12/19/2020   06:53:53  (  78.85,  47.03)    1.40                55
 12/19/2020   07:45:49   ( -78.84,-145.68) 12/19/2020   07:44:38  ( -78.86,-145.76)    3.14                71