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
New Year's DayJanuary 1
Martin Luther King DayJannuary 20
Presidents' DayFebruary 17
Memorial DayMay 26
Juneteenth National Independence DayJune 19
Independence DayJuly 4
Labor DaySeptember 1
Columbus Day/Indigenous Peoples' DayOctober 13
Veterans DayNovember 11
Thanksgiving DayNovember 27
Day After ThanksgivingNovember 28
Christmas DayDecember 25