Wexio Christmas Calendar 2017 Mystery Cache

Note! There is no need to write "I solved it"-notes on participating mysteries.
The picture below is also clickable....

This is a mystery cache that involves solving twentyfour other different mysteries to get the final coordinates for this cache.
Each day between the 1^st and 24^th of December 2017 I'll update the cache description sometime between 8:00 - 12:00 to let you know which cache you have to solve that day.
As you solve each of the mysteries in this serie you will be rewarded with two values when you check you solution with the Geocheckers below.

• You will get a X value.
• You will also be given a Y value.

After solving all caches you shall sum up all X and Y values and then you will have the coordinates for this cache.

The difficulty of the mysteries is varied and distributed randomly.
The total sum of the difficulties is slightly over 80 stars. Some are easy, and some will hopefully strain your brain.
I have solved all of the mysteries myself (occasionally with a little help from a friend).

Note! When solving mystery number 18 you will get two coordinates at one point. I will not forced you to travel down to Australia to do the outdoor part
Use the southernmost of them in the checker.