We were talking on one of the problems with screenshots of the site, and I thought that the line with "X days until end of void" is often left out of the Image. And since I use the days until end of void a lot, I decided to share a quick way to calculate how to know when void will end for any pillar.
So the trick here is that void, by its definition always ends after the 10 day stream ends. And that streams always start with Jia and they end with Gui.
In that sense at every point in time we will know on the next Jia day(the nearest one form where we are) the Void Stream will be over.
However, that by itself may not be enough, still how to know how many days until next Jia?
Well, the stems are 10.
So we just turn the stem to a number. And subtract it from 10. Meaning that number will be the amount of days until next Jia comes.
Example:
Today is Ji/Chou day. Next Jia day will be first day of the new stream. To find out when we do 10-6(Ji) and we get 4. 4 Days until end of stream(the site says 5 as that is 4 more + today).
Another example:
Geng/Zi pillar. Geng = 7. Next Jia is new stream. 10-7 = 3 days until end of void.
Summary:
Just take 10 and subtract the number of the stem. Then if you want add 1 for the current day as the calc do.
So basically if the screenshot doesn't show "X days until end of stream/void" we can just calculate it for a few seconds like that. : )