Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and NOAA-19
TLE Epoch: 2021 9 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)
 09/21/2021   03:56:46   ( -77.87, -83.34) 09/21/2021   03:55:34  ( -77.88, -83.45)    2.74                72
 09/21/2021   04:47:32   (  77.89,  83.86) 09/21/2021   04:46:38  (  77.88,  83.75)    3.24                54
 09/21/2021   05:38:17   ( -77.92,-108.95) 09/21/2021   05:37:34  ( -77.89,-108.90)    3.26                43
 09/21/2021   06:29:02   (  77.90,  58.46) 09/21/2021   06:28:37  (  77.92,  58.52)    3.14                25
 09/21/2021   07:19:47   ( -77.92,-134.35) 09/21/2021   07:19:34  ( -77.90,-134.35)    2.61                13
 09/21/2021   08:10:32   (  77.90,  33.07) 09/21/2021   08:10:37  (  77.93,  33.08)    3.34                 5
 09/21/2021   09:01:17   ( -77.93,-159.75) 09/21/2021   09:01:34  ( -77.91,-159.80)    2.45                17
 09/21/2021   09:52:02   (  77.91,   7.67) 09/21/2021   09:52:37  (  77.94,   7.63)    3.89                35
 09/21/2021   10:42:47   ( -77.93, 174.85) 09/21/2021   10:43:34  ( -77.92, 174.76)    2.85                47
 09/21/2021   11:33:33   (  77.95, -17.94) 09/21/2021   11:34:37  (  77.95, -17.81)    2.96                64
 09/21/2021   12:24:19   ( -78.02, 149.04) 09/21/2021   12:25:32  ( -78.00, 149.74)   16.39                73