The day of one's wedding.
A birding event in which teams compete against one another to see as many different bird species as possible in a certain area over the course of a day or part thereof.
Any day on which something significant or momentous happens.
The observance of a holiday or feast day, as by solemnities.
The act, process of showing appreciation, gratitude and/or remembrance, notably as a social event.
The formal performance of a solemn rite, such as Christian sacrament.
A social gathering for entertainment and fun; a party.