Where the 120 days come from
Florida Rule of Civil Procedure 1.070(j) gives a plaintiff 120 days after filing the initial pleading to serve each defendant. If service is not made in time, the court can drop that defendant or extend the time; what happens in a particular case is a question for your attorney. The rules are published by The Florida Bar.
How the deadline is counted
The 120 days are calendar days, counted from the day after filing. When day 120 falls on a weekend or a legal holiday, the general counting rule for Florida courts moves the deadline to the next day that is not a weekend or holiday. The calculator does that and shows you when it happened.
Do not wait for the last week
The 120 days include every attempt, every wrong address and every gate. A defendant who works nights or avoids the door can take several tries. If you are inside the last few weeks, order a faster level: Rush makes the first attempt within 24 hours, Same Day the same day. Read how long you have to serve papers in Florida and how we serve people who avoid service.