There are 365 Almanax Quests, one for each day of the year.
The quest runs on the same timezone as the server and can be found to the top right of the screen.
Click on the Akamanx icon to open the calendar below. Completed quests will be in green.
The message from the quest giver will only appear over the current day's quest.
If you miss a quest then you will have to wait 365 days for another chance.
The reward for completing a quest is usually an Almoken which can be used at a Almanax Machine and some XP.
The first quest was started on the 18th Septangel (September) 2012.