Ham Radio Field Day 2025 Schedule. Every june, more than 40,000 hams throughout north america set up temporary transmitting stations in public places to demonstrate ham radio's. Field day is always the fourth full weekend of june, beginning at 1800 utc saturday and running through 2059 utc sunday.

Field day is ham radio’s open house. Winter field day is an event very similar to the june arrl field day except—you guessed it—it’s held in winter.