> Whats useful is the method for calculating the week mentioned. Granted > there are tools online that help. But the math associated with reversing > the date now is clearer using the Julian date. May tinker in excel as I > think there are date macros and such available. > The output needed for the old receivers is now - 1024 weeks given as a date. > On some of the really old ones I think it may be 2 rollovers at this point. > > Regards > Paul > WB8TSL
Paul, there's lots of JD/MJD and GPS date time code at www.leapsecond.com/tools/ Look for gpsweek.c gpsdate.c gpsepoch.c mjd.c mjdclock.c to name a few. To plan ahead for the next century try this: C:\tvb\cl> gpsweek 1980 2100 | grep rollover 1023 0 1023 1999-08-15 227 228 229 230 231 232 233 rollover 2047 1 1023 2019-03-31 90 91 92 93 94 95 96 rollover 3071 2 1023 2038-11-14 318 319 320 321 322 323 324 rollover 4095 3 1023 2058-06-30 181 182 183 184 185 186 187 rollover 5119 4 1023 2078-02-13 44 45 46 47 48 49 50 rollover 6143 5 1023 2097-09-29 272 273 274 275 276 277 278 rollover /tvb _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
