holidays in may - SERP Analysis

https://www.countryliving.com/entertaining/a38091962/may-holidays-and-observances/

https://nationaltoday.com/may-holidays/

https://www.calendar.com/blog/6-holidays-and-observations-in-may/

https://en.wikipedia.org/wiki/Public_holidays_in_the_United_States

https://web-holidays.com/holiday-calendar/may-holidays-celebrations

https://www.opm.gov/policy-data-oversight/pay-leave/federal-holidays/

https://www.goodhousekeeping.com/holidays/a64370620/may-holiday-and-observances/

https://www.nationaldaycalendar.com/may/may-days

https://www.thespruce.com/special-days-and-observances-in-may-4176574