timePeriod

The period of time that's covered by a budget. You setthe start date and end date. The start date must come before the end date. The end date must come before 06/15/87 00:00 UTC.

If you create your budget and don't specify a start date, Amazon Web Services defaults to the start of your chosen time period (DAILY, MONTHLY, QUARTERLY, or ANNUALLY). For example, if you created your budget on January 24, 2018, chose DAILY, and didn't set a start date, Amazon Web Services set your start date to 01/24/18 00:00 UTC. If you chose MONTHLY, Amazon Web Services set your start date to 01/01/18 00:00 UTC. If you didn't specify an end date, Amazon Web Services set your end date to 06/15/87 00:00 UTC. The defaults are the same for the Billing and Cost Management console and the API.

You can change either date with the UpdateBudget operation.

After the end date, Amazon Web Services deletes the budget and all the associated notifications and subscribers.