Arrl Contest Calendar 2025. $4.95 * buy it *after coupons & promotions. 2359z jun 15 amateurs worldwide contact and exchange qso information with other amateurs using any digital mode (excluding rtty) that.

Keep track of your important dates, contests, and holidays with a 2025 arrl calendar. 1600z, jan 25 to 2159z, jan 26, 2025: