T-Minus First Day Of School Countdown Cost: $9 Get the full version     Trial version     Developer's Website Contacting third-party download site please wait. If your download does not start, click here, or get the full version Descriptions T-Minus First Day Of School Countdown: T-Minus First Day Of School Countdown Clock. Are you excited about the first day of school? As you look forward to seeing old friends and making new ones, you can count down the remaining time of summer vacation.You can play our background sound or add your own favorite song! Your anticipation will build as you count down the days, hours and minutes.