Pennsylvania One Call System is open 24 hours a day, 365 days a year. This includes all state holidays. The following are the state holidays that will not be included in the calculation of the three business days notice.

Pennsylvania State Holidays
2025
Christmas DayDec. 25
2026
New Year's DayJan. 1
Martin Luther King DayJan. 19
Presidents' DayFeb. 16
Memorial DayMay 25
Juneteenth National Independence Day June 19
Independence Day ObservedJuly 3
Labor DaySept. 7
Columbus Day/Indigenous Peoples' DayOct. 12
Veterans DayNov. 11
Thanksgiving DayNov. 26
Day After ThanksgivingNov. 27
Christmas DayDec. 25