Currently, if you buy one of those "pre leveled character coupons" in cash shop, you don't get an instant level 50/100/150 character. You get a level 1 character, and an exp potion with enough exp to get to the level you paid for.
Do you know why that is?
It's because a character needs to reach its level by going from the start and doing certain mandatory quests and job advancements. If those are skipped, the character ends up lacking skills, items, stats, pre-requisites, etc.
In fact, some classes can't be made with those pre-leveled coupons, because their mandatory story quests are so complex that Nexon doesn't want to risk people drinking the exp potion without doing them, and permanently glitching their character.
In the distant past, we had Ultimate Explorers that were level 50 on creation - and they had issues with low HP/MP and missing inventory slots because of it.
Why am I telling you all this?
Changing the class of an existing character is the same as creating an instant high-level character. It would be a programming nightmare to make sure it has all the features it would have gotten if played as that class from level 1 - and doesn't have any features that the original class gets but the new one doesn't. And that's before we get into all your ideas about converting gear, nodes, etc.
Explorers have open advancement because their progress - story quests etc - is identical. But doing the same thing for any two classes is not nearly as simple.
So, this is, in my opinion, not a feasible suggestion.
You moved your clock back, so reset is now an hour earlier than it used to be.
If it was 5PM before, it's 4PM now.
You can use Google to find out when "midnight UTC" is in your timezone.
Or you can go to any "airport" in-game and look at the big clock display, to know current game time.