Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2021 6 17.  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)
 06/20/2021   19:53:09   (  78.13,-145.02) 06/20/2021   19:54:22  (  78.17,-144.24)   18.35                73
 06/20/2021   20:44:05   ( -78.22,  22.79) 06/20/2021   20:45:08  ( -78.22,  22.76)    0.78                63
 06/20/2021   21:35:07   (  78.21,-170.00) 06/20/2021   21:35:53  (  78.21,-169.84)    3.61                46
 06/20/2021   22:26:05   ( -78.23,  -2.63) 06/20/2021   22:26:38  ( -78.22,  -2.62)    0.74                33
 06/20/2021   23:17:07   (  78.23, 164.58) 06/20/2021   23:17:24  (  78.25, 164.56)    2.62                17
 06/21/2021   00:08:05   ( -78.24, -28.06) 06/21/2021   00:08:08  ( -78.23, -28.00)    2.22                 3
 06/21/2021   00:59:07   (  78.24, 139.15) 06/21/2021   00:58:54  (  78.25, 139.17)    1.57                13
 06/21/2021   01:50:05   ( -78.25, -53.48) 06/21/2021   01:49:39  ( -78.27, -53.60)    3.10                26
 06/21/2021   02:41:07   (  78.25, 113.72) 06/21/2021   02:40:24  (  78.25, 113.79)    1.56                43
 06/21/2021   03:32:05   ( -78.27, -78.90) 06/21/2021   03:31:09  ( -78.27, -78.99)    1.90                56
 06/21/2021   04:23:07   (  78.26,  88.30) 06/21/2021   04:21:54  (  78.25,  88.41)    2.60                73