What did you mean by build up time for abyssia? And it will be np to get to bastok need to pick Dem crystal anyways!
Time in Abyssea is granted via Traverser Stones. One stone initially grants 30 minutes of time. You'll start out only earning one stone every 20 hours. You can only hold three stones at first, so after three days you get a whole 90 minutes of time in Abyssea. That's not enough to do much of anything except unlock your maws.
So we recommend you start the initial Abyssea quest (can start it at level 30) and then wait a week or two and do other stuff inside Abyssea, like exp. Abyssea exp parties are best done at level 75+ - even if you can go in at level 30, you can't contribute to the exp alliance until you're at least level 70.
Later on, you can gain key items that increase the rate at which stones replenish (down to one every eight hours), which grant bonus time per stone (from 30 to 48 minutes max), and which increase the total number of stones you can hold (from 3 to 6.) But in the beginning, it's just better to bank up several hours of time before your first exp party - you can earn additional time within the zone with time extensions, and carry over any extra time you leave Abyssea with, up to 120 minutes. (It's not unheard of for some folks to have 500+ minutes build up in an exp part - I heard of some crazy dude with over a thousand minutes.)
Edited, Jan 10th 2013 11:38am by catwho