Usages of jikan

かん を めること は できません。jikan o tomerukoto wa dekimasen.
(You) cannot stop time.
Using は in this sentence might be more suitable because it is more all-encompassing than が (it implies that no one can stop time), while が is more specific and might refer to something like being unable to stop time on a personal capacity.
かん が ありません。jikan ga arimasen.
(I) have no time.; There is no time.
かん です。jikan desu.
It's time.
とても つかれて います よ。 さんかん だけ ました。totemo tsukarete imasu yo. sanjikan dake nemashita.
I'm really tired. I only slept for three hours.
そろそろ かん です。 った ほう が いい です。sorosoro jikan desu. itta hou ga ii desu.
It's nearly time. You should go.
わり が ちかい です。 もう かん が ありません。owari ga chikai desu. mou jikan ga arimasen.
The end is near. There's no longer any time left.
しゅうまつで、 かん が ある。shuumatsude, jikan ga aru.
It's the weekend, and I have time.
テレビ を す かん です。terebi o kesu jikan desu.
It's time to turn off the TV.
くつ を みがく かん が ありません。kutsu o migaku jikan ga arimasen.
(I) don't have time to polish my shoes.
たいせつな かん を ありがとう。taisetsuna jikan o arigatou.
Thank you for the precious time.
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