Each pre-order has an estimated date of completion and delays due to unforeseen circumstances in each process of producing the product may occur.
Each shipping quarter covers the following dates:
Q1: 1 Jan - 31 Mar
Q2: 1 Apr - 30 Jun
Q3: 1 July - 30 Sep
Q4: 1 Oct - 31 Dec
Specific month (i.e. December 2019): can be any time between the first day to the last day of the month.