The mountain time zone is 2 hours behind eastern standard time. EST states reside on the east coast and contain many states that are next to the Atlantic ocean. Generally you want to call your east coast people first.
The combined sales tax rate for Clermont, FL is 7%. This is the total of state, county and city sales tax rates. The Florida state sales tax rate is currently 6%. The Lake County sales tax rate is 1%. Clermont sales tax rate is 0%.
The state of Florida imposes a tax rate of 6% plus any local discretionary sales tax rate (up to an additional 1.5%). The company must collect and remit the tax on the schedule provided by the Florida Department of Revenue for your particular company (usually monthly).