Example sentences
jīn今tiān天xīng星qī期jǐ几？
What day is today?
wǒ我jīn今tiān天bù不shàng上bān班。
I'm not working today.
The story behind the character
天
大 is a person with arms spread. Add one stroke on top and you get 天. The space above a person's head. So it didn't start as "sky," it started as "the top of your head." Only later did it climb up to mean heaven.