adverb / noun
tonight
tuh-NYTE/təˈnaɪt/
The present or coming night.
The man sets up his telescope to observe the sky tonight.

Etymology
Here to means “at” or “on,” rather than movement toward something. The combination already meant the night now present or the coming night, preserving the same immediate time reference.
In context
Good evening, friend. Thank you for coming back to the dark with me tonight. Tonight, we're going into a royal palace on a winter's night
More examples
- Tonight looks clear and cold.
- Will you call me tonight?
- The concert is tonight.
Forms
tonight
Similar words
- this evening
- Fits the evening portion rather than the entire night.