Daylight saving has finished so I need to wind the watch back 1hr. Anyone know how?
Gets GMT time from satellite network. 
Connect the ultility and just change time zone to +10.
Select to expand quotesailquik said..
Gets GMT time from satellite network.
Connect the ultility and just change time zone to +10.
Thanks! I took it outside and switched on the GPS as it said but that didn't fix it. I'll do it this way.
I haven't tried mine since the GPS Rollover. I hope its not going to be an issue for us. The time on mine drifts a bit but comes back as soon as it hooks up to some satellites.
"On, or possibly after, 6 April, some GPS receivers may start to behave strangely. The data they output may jump backwards in time, resulting in month and year timestamps that are potentially up to 20 years out of date. This is a known issue; in April 2018 the Department of Homeland Security in the United States issued a memo to make GPS users aware of the situation. Any changes, adjustments, or other actions are ultimately the responsibility of the user, so DHS strongly recommends owners and operators of critical infrastructure to prepare for the rollover. This refers to the GPS Week Rollover on Coordinated Universal Time (UTC) derived from GPS devices. The potential problem revolves around the way that GPS handles the week element of the data that forms part of the navigation signal; specifically the CNAV and MNAV message types. The week number is encoded into the data stream by a 10-bit field. A binary 10-bit word can represent a maximum of 1,024 weeks, which is approximately 19.7 years. Each 19.7 year period is known in GPS terms as an "epoch". At the end of each epoch the receiver resets the week number to zero and starts counting again - a new epoch begins. The first epoch started when GPS was launched in January 1980; hence the first epoch of GPS time came to an end on 21st August 1999. As we approach the end of the second epoch, which will fall on 6th April 2019, we may well see problems caused by the rollover"
Locosys assured us that the GPS rollover will not affect their GPS's in any way.
I believe all other modern consumer GPS's will also have a mechanism to cope without issues.
Anything built in the last 10+years wont have an issue. Think of this problem as being similar to the year-2000 rollover -> in the early days of computer processing power/memory, there was limited space and time, so we use two digit years. Similar problem, limited accuracy/digits in the old hardware.
GW-60 time is always updated when the GPS is turned on. It reads and stores UTC from the satellites. However, the firmware does not automatically switch for DST. You have to do that manually in the utility. For example, I live in the Pacific Time Zone. During the winter I have to set the zone to GMT-0800. During the daylight savings time, I have to set it to GMT-0700.
Making the DST switch for all the various time zones around the world would take a lot of code that would take up memory space in the GW-60. Not really necessary. Just do it manually in the utility for your location. No biggie.
