1 variant: 夜 yè

1 today

2 at the present

3 now

1 this year

1 today

1 tonight

1 never put off until tomorrow what you can do today (idiom)

1 to live in the moment (idiom)

2 to live every day as if it were one's last

3 to enjoy while one can

1 things are very different now (idiom)

2 times have changed

1 lit. to make night as day (idiom); fig. to burn the midnight oil

2 work especially hard

1 to make day as night (idiom, from Book of Songs); fig. to prolong one's pleasure regardless of the hour