Server Message.

Offset Type     Name             Description
------ -------- ---------------- ------------------------------
 0000  BYTE     cmd
 0001  BYTE     id1
 0002  BYTE     id2

If id2 == 1, then this is a season change.

If it's a season change the id1 means:

• 0 - spring
• 1 - summer
• 2 - fall
• 3 - winter
• 4 - desolation