GitHub - PHoltzman/vixen-lights-countdown-generator: This is a Python script that generates a sequence file for Vixen lights displaying a countdown timer on a seven-segment display
Disciplined Time & frequency generator | TIME & FREQUENCY SOLUTIONS
Countdown — Tom Perlozzo
Free and customizable countdown templates
Countdown Clock
Countdown Timer to Any Date
How to Create a Countdown Timer | MemberGate Membership Site Software
Countdown Maker: How to Make a Countdown Timer Video Online