标准时

• 木(wood; timber)RADICAL
• 示(sign; mark)PHONETIC

A wooden sign (标) is made from wood to display directions for everyone.

• 冫(ice; cold)RADICAL
• 隹(short-tailed bird)PHONETIC

Cold ice water helps measure water level accurately, thus meaning standard, permissible.

• 日(sun; day)RADICAL
• 寸(inch; unit of measurement)PHONETIC

Time flows like the sun moving inch by inch across the sky.