Re: [time-nuts] WWV, WWVB and Daylight Savings Time

2018-08-24 Thread Bob kb8tq
Hi > On Aug 24, 2018, at 1:18 PM, Mark Sims wrote: > > Lady Heather has DST support code in it (in file heathmsc.cpp). It supports > the current standard settings for several areas (US, Europe, Australia, New > Zealand) or you can specify a custom DST rule. The code is around 200 lines >

Re: [time-nuts] WWV, WWVB and Daylight Savings Time

2018-08-24 Thread Graham / KE9H
Good Idea, John. I'll do that. Just to see what they say. --- Graham == On Fri, Aug 24, 2018 at 1:25 PM John Marvin wrote: > > Someone suggested scraping the NIST time service website for this > information. The NIST website specifically says "Also, it is > inappropriate to generate your own

Re: [time-nuts] WWV, WWVB and Daylight Savings Time

2018-08-24 Thread John Marvin
There's support in "over the air" ATSC digital TV signals for DST info, but most TV stations aren't known  for keeping their time information up to date.  There's a system time packet that has the GPS time, the number of seconds difference between GPS time and UTC (and a lot of stations don't

Re: [time-nuts] WWV, WWVB and Daylight Savings Time

2018-08-24 Thread Bob kb8tq
Hi I think there are a lot of ways to come up with a “local” WWVB signal that has all the DST stuff in it (or not if you prefer …). There’s not a lot of code or development involved. Even with the current shortage of parts, there are an ocean of dirt cheap MCU’s and boards to pick between.

Re: [time-nuts] WWV, WWVB and Daylight Savings Time

2018-08-24 Thread Hal Murray
ke9h.gra...@gmail.com said: > If both the HF and LF signals go away due to the proposed budget cuts, what > is the next simplest way (for something like a microprocessor based clock) to > get DST information? "microprocessor" isn't a well defined term. If you have an OS, use the time

[time-nuts] WWV, WWVB and Daylight Savings Time

2018-08-24 Thread Graham / KE9H
Currently, getting Daylight Savings Time status is easy using WWV or WWVB since they have bits in the protocol marking status for the US, and in the case of WWVB, impending change. If both the HF and LF signals go away due to the proposed budget cuts, what is the next simplest way (for something