Why do my virtual machines get terminated every Tuesday of a month?

FutureGrid is a testbed that is used by many users to test out various software and services. As a testbed we try also to deploy software updates and improvements. This requires us to dedicate one day of the week to deploy and make improvements available to the user. Often this day will aslo be used to clean our cloud infrastructure which is needed as part of upgrades. We recommend that all users save their VM on the first Monday of the month and bring it back up on the First Wednesday in case their VMs should run longer than a month.