Birthday and work anniversary messages are sent at 9am based on your workspace's time zone setting.
By default, messages for birthdays and work anniversaries that fall on a weekend are sent on the previous Friday. However, you can opt to deliver celebrations on the weekend by updating your settings.
Adjusting Celebrations Delivery Time
Go to the Web App.
Go to Settings, then the Celebrations section.
Click the dropdown on the Celebrations Delivery and adjust to your preference.
