TEC Month View: blackout all July Fourths, since the library is closed. Screenshot: https://cl.ly/ad0626fcb03e

style.css

/**
 * TEC Month View: blackout all July Fourths, since the library is closed.
 * Screenshot: https://cl.ly/ad0626fcb03e
 * From: https://gist.github.com/cliffordp/90757a9fccc5b19431be12fa49839b49
 */
#tribe-events .tribe-events-month td[data-day$="07-04"],
#tribe-events .tribe-events-month td[data-day$="07-04"]:hover,
#tribe-events .tribe-events-month td[data-day$="07-04"] a,
#tribe-events .tribe-events-month td[data-day$="07-04"] a:hover,
#tribe-events .tribe-events-month td[data-day$="07-04"] h3,
#tribe-events .tribe-events-month td[data-day$="07-04"] h3:hover {
	background-color: darkred;
	color: white;
}
#tribe-events .tribe-events-month td[data-day$="07-04"],
#tribe-events .tribe-events-month td[data-day$="07-04"]:hover,
#tribe-events .tribe-events-month td[data-day$="07-04"] > div:first-child,
#tribe-events .tribe-events-month td[data-day$="07-04"] > div:first-child:hover,
#tribe-events .tribe-events-month td[data-day$="07-04"] > div:first-child a {
	background-color: black;
	color: white;
}