Tonights
Tonights is an infrequently used form that does not have a standard meaning in formal English. Tonight is the common adverb referring to the evening of the current day, and its possessive form tonight’s is used to modify a noun (for example, tonight’s schedule). The nonstandard string tonights, without an apostrophe, is not an established inflection and generally appears only as a typographical variant, a stylistic device in headlines, or as a proper noun in branding or creative works.
In standard grammar, tonights should be avoided for ordinary prose. To describe events occurring this evening
Possible interpretations of tonights include its use as a brand name, a fictional title, or a stylistic
See also: tonight, tonight’s, this evening, English typography, stylistic capitalization.