昶
chǎng

a long day. bright. extended. clear

A long 永 day 日; 永 also provides the pronunciation

Components

永
永 SoundMeaning component
yǒng long
日
日 Meaning component
rì sun

Character Evolution

Bronze form
Bronze Early Spring and Autumn ~700 BC
Seal form
Seal Shuowen ~100 AD
Regular Modern

Historical Pronunciations

Old Chinese
Zhengzhangtʰaŋʔ
tʰaŋs

說文解字

日長也。从日、永。會意。

Sources

Readings & variants
Unicode
Historical pronunciations
Zhengzhang Shangfang
Historical images
Academia Sinica
Etymology
Shuowen Jiezi (說文解字)