National Kiss Day, or National Kissing Day, is held on July 6. The purpose of the holiday is for every participant to make an effort to receive a kiss at least once during this 24-hour period.
According to the National Kissing Day website, all types of kisses qualify for National Kissing Day, including pecks on the cheek, romantic kisses and platonic kisses from family members. Kisses may also be for any purpose, such as saying hello or goodbye.
The only rule that must be followed for National Kissing Day is to ensure that both parties are wiling participants in the kiss. Kisses may be private and do not have to be shared with others in order to "count."