When it comes to birth time (which affects the Hour Pillar in Ba Zi, and affects the entire reading in ZWDS or QMDJ), there are debates and discussions whether we should use the True Solar Time or Clock Time.
The Clock Time sect believe that if the government set time adjustments (e.g: daylight savings or government adjusted time) and you were born in that country, it's your fate, so the clock time should be used.
The True Solar Time sect believe that reading should be done based on True Solar Time, because that is the situation when Ba Zi, ZWDS, QMDJ were invented. No daylight savings, no adjusted time for government administration purpose.
Interestingly enough, people from the countries without daylight-savings trust the government time more, because they never experience a time when government (human) change the clock forward and back. While people from countries with daylight-savings trust nature's time more, because every year they experience that changing clock forward and back won't actually change the nature time.
I personally think using True Solar Time is more accurate.
Why? Because Clock and Timezones are set by humans. For example: if tomorrow the government of a certain country tell the citizens they'll change the timezone to 3 hours forward. Are you going to read Ba Zi / ZWDS/ QMDJ chart based on the timezone set by human?
Earth rotating the Sun is not set by human. In my opinion, a reading based on correct longitude, latitude, and True Solar Time would be more accurate. Do you trust the nature/universe or do you trust human?
