Yea, he changes the time too. That seems to be the 2 big differences there, time moves and Jia days are part of another stream for void/empty days.
I can comment more on the part with Jia days, since I wanted to add that to the app.
The interesting thing there is that it splits the stream...
Normally we have for example:
1.Jia/Zi
2.Yi/Chou
3.Bing/Yin
etc.
And all are with void days Xu and Hai, also all are one after another in the solar calendar.
However in Alex approach we have
1.Jia/Xu
2.Yi/Chou
3.Bing/Yin
etc.
All with void Xu and Hai.
The detail here is in the way the days in the calendar come one after another, they will never come like that.
So on 2.Yi/Chou we have 8 days left until the end of void stream.
In 3.Bing/Yin we have 7 days until the end of void stream.
etc.
But on 1.Jia/Xu we actually have 12 days until the end of the void stream, since that isn't the day before Yi/Chou also the day branch is the void branch.
So what we get that way day by day in the calendar:
Day 1 - Jia / Xu - void branches Hai and Xu, 12 days left till the end of stream.
Day 2 - Yi / Hai - void branches Shen and You, 9 days till the end of stream(however important to notice we moved to another stream just now)
Day 3 - Bing / Zi - void branches Shen and You, 8 Days till the end of void stream
etc.
Basically is moving the streams outside of the progression of the calendar. Making it difficult for calculators if they want to show "days left until end of stream". Also one day will need to jump that way, Jia days will always jump beyond the other stream, since they will never be followed of days belonging to the traditional pillar progression.
It is a small difference statistically, since it effects 6/60 pillars, so 10% of the questions may get this... All the rest is still the traditional approach. But in Jia days empty/void days will be different like this...
Does it work better... i haven't tested it a lot, Im happy with the classical approach... he says he has tested it in hundreds of examples, so it is hard to argue with that as well. But logically it is unusual.