Payroll Compliance 7 min read
How Federal Holidays Affect Payroll & Pay Dates
Learn the preceding business day rule, ACH banking processing cutoffs, and how federal holidays shift pay dates.
Work calendar tools
Choose a rule. Preview dates. Export to your calendar.
WCalendar is a small workbench for shift schedules, business-day counts, pay periods, ICS files, and add-to-calendar links.
Browser-based No account Preview first ICS / CSV export
Start here
Date Calculator
The fastest way to calculate days between dates or add/subtract days.
41
Tools
ICS
Calendar files
0
Accounts
Live tool flow
4 on 4 off schedule preview
1 Configure
Start date and pattern
2 Preview
Generated work dates
3 Export
ICS or CSV download
Date Generated row Output
May 10 Work ICS
May 11 Work CSV
May 12 Work Previewed
May 13 Work Ready
May 14 Off Skipped
May 15 Off Skipped
Choose your task
Start with the outcome you need. Each page opens directly on a working tool with preview and export controls.
Most common
Build a shift calendar
Pitman, DuPont, 4 on 4 off, 2-2-3, or custom rotation.
Output: ICS + CSV
Open shift tools
Workday math
Count business days
Calculate working days between dates and export the list.
Output: CSV + ICS
Count days
Payroll planning
Generate pay periods
Biweekly, weekly, or semi-monthly pay periods for 2026/2027.
Output: ICS + CSV
Build pay periods
Event sharing
Create calendar links
Make an ICS file or add-to-calendar links for one event.
Output: Links + ICS
Create links
Date math
Calculate days between dates
Count total calendar days between dates, preview weekday/weekend and a business-day summary, then export as CSV.
Output: CSV
Count days
Date math
Calculate working days between dates
Count working days between dates by excluding weekends and (optionally) US federal holidays, then export the list.
Output: CSV + ICS
Count working days
Date math
Add/subtract days to a date
Offset a date by calendar days and export the result as CSV with day type and business-day status.
Output: CSV
Add days
Calendar builder
Generate a printable monthly calendar
Choose year/month, switch Sunday or Monday week start, and print or export your calendar.
Output: Print + CSV
Open calendar generator
Knowledge & Reference
Featured Workplace & Payroll Guides
In-depth guides on rotating shift patterns, federal holiday payroll compliance, and working day calculation standards.
Continuous Operations 9 min read
Understanding 2-2-3 Rotating Shift Schedules
Complete breakdown of the Pitman 28-day continuous cycle, 12-hour rotations, and every-other-weekend off schedules.
Payroll Planning 8 min read
Biweekly vs Semi-Monthly Payroll Calendars
Comparing 26-paycheck biweekly schedules with 24-paycheck semi-monthly systems, plus handling 27-paycheck anomaly years.
2026 Analysis 6 min read
Standard Working Days & Business Hours in 2026
Month-by-month calculation of net business days, official holidays, and 2,080-hour annual work planning.
What you get free
These three free packs cover most paid calendar-tool workflows: export, printable templates, and date planning.
Core tools
Every tool follows the same pattern: configure your schedule, preview the generated dates, and export a file to your calendar app.
Date calculators
Date Calculator
Calculate days between dates or add/subtract calendar days, preview weekday/weekend totals, and export CSV.
Output: CSV
Date calculators
Days Between Dates Calculator
Count total calendar days between dates, with optional start/end inclusion, and export the date list as CSV.
Output: CSV
Workday calculators
Working Days Calculator
Calculate working days between dates by excluding weekends and optional US federal holidays.
Output: CSV + ICS
Date calculators
Add Days to Date Calculator
Add or subtract calendar days from a date, preview the day type, and export the result as CSV.
Output: CSV
Calendar generators
Calendar Generator
Generate printable monthly calendars with week-start, blank/notes mode, holiday markers, and CSV export.
Output: Print + CSV
Calendar generators
Printable Calendar
Create clean printable monthly calendars with configurable year, month, and week start.
Output: Print + CSV
Calendar generators
Blank Calendar
Build blank monthly templates with notes lines and print-friendly layout.
Output: Print + CSV
Calendar generators
Monthly Calendar
Switch month/year quickly and generate calendar grids with optional week numbers.
Output: Print + CSV
Calendar generators
Calendar Template
Create reusable calendar templates in blank or notes mode and share via URL.
Output: Print + CSV
Calendar generators
2026 Calendar
Open the calendar generator with a 2026 default month and printable configuration.
Output: Print + CSV
Calendar generators
2027 Calendar
Open the calendar generator with a 2027 default month and practical export options.
Output: Print + CSV + ICS
File and payroll utilities
Create single event files, add-to-calendar links, or generate biweekly pay period tables for the year you need.
Calendar generators
2026 Calendar With Holidays
Generate monthly 2026 calendars with US federal holiday markers and observed-date handling.
Calendar generators
Cute Calendar 2026
Soft pink 2026 monthly printable calendar with cute color themes, notes lines, and holiday markers.
Holiday reference
US Federal Holidays 2026
View and export the 2026 US federal holiday list with observed dates in CSV format.
Holiday reference
US Federal Holidays 2027
View and export the 2027 US federal holiday list with observed dates in CSV format.
Date lookup
Week Numbers 2026
Browse all 2026 week numbers with start/end ranges in ISO or US systems.
Date lookup
Week Numbers 2027
Browse all 2027 week numbers with start/end ranges in ISO or US systems.
Shift calendars
Shift Calendar Generator
Build a repeating work/off pattern, preview the dates, and export ICS or CSV files.
Shift calendars
4 On 4 Off Shift Calendar
Start with a locked 4 work days, 4 off days pattern and adjust the start date or export options.
Shift calendars
2-2-3 Shift Calendar
Create a 2 work days, 2 off days, 3 work days schedule with calendar export.
Shift calendars
24/48 Shift Calendar
Generate a 24 hours on, 48 hours off duty calendar from your start date.
Shift calendars
Pitman Shift Calendar
Generate a 14-day 2-2-3-2-2-3 rotating Pitman shift schedule with 2-day and 3-day work stretches.
Shift calendars
DuPont Shift Calendar
Preview a 4-week rotating 28-day DuPont shift schedule featuring a continuous 7-day off stretch.
Shift calendars
48/96 Firefighter Shift Calendar
Generate a 48 hours on duty, 96 hours off duty 3-platoon firefighter shift rotation with ICS export.
Shift calendars
Panama Shift Calendar
Generate a 28-day 4-crew Panama rotation with alternating day and night 12-hour shifts.
Work schedules
9/80 Work Schedule Calendar
Preview a two-week 9/80 work schedule with flex day labels and exports.
Work schedules
4/10 Work Schedule Calendar
Preview a 4-day, 10-hour compressed workweek calendar with 3-day weekends and flexible off days.
Workday calculators
Business Days Calculator
Count business days between two dates with optional US federal holiday exclusions.
Workday calculators
Business Days Between Dates
Count weekdays between two dates with optional US federal holiday exclusions.
Workday calculators
Add Business Days Calculator
Add or subtract business days from a start date while skipping weekends.
Workday calculators
Working Days in 2026
Preview and export all 2026 working days with weekends and optional holidays excluded.
Workday calculators
Working Days in 2027
Preview and export all 2027 working days with weekends and optional holidays excluded.
Date lookup
Week Number Calculator
Find ISO week number, US week number, weekday number, and day of year.
Pay periods
Biweekly Pay Period Calendar 2027
Generate 2027 biweekly pay period start dates, end dates, and paydays.
Pay periods
Biweekly Pay Period Calendar 2026
Generate 2026 biweekly periods from your own first period start date.
Pay periods
Weekly Pay Period Calendar 2026
Generate 2026 weekly pay periods, 52 or 53 pay dates, and Thursday/Friday payday rules.
Pay periods
Semi-Monthly Pay Period Calendar 2026
Explore all 24 semi-monthly pay periods for 2026 with Friday bank rollbacks and CSV export.
Pay periods
Weekly Pay Period Calendar 2027
Generate 2027 weekly pay periods, 52 or 53 pay dates, and Friday payday rules.
Pay periods
Semi-Monthly Pay Period Calendar 2027
Explore all 24 semi-monthly pay periods for 2027 with Friday bank rollbacks and CSV export.
Calendar files
ICS File Generator
Create a single calendar event file for Google Calendar, Outlook, or Apple Calendar.
Calendar links
Add to Calendar Link Generator
Create Google Calendar, Outlook, and Yahoo links with an ICS fallback.
Open a prefilled example
Click any example to open a tool with ready-to-use settings. You can adjust the dates and export options before downloading.
4 on 4 off shift calendar 2-2-3 rotating shift pattern 48/96 firefighter shift schedule (3 platoons) Panama 28-day rotating schedule (day/night) Pitman 14-day 2-2-3-2-2-3 rotating schedule DuPont 28-day 4-crew rotation with 7-day off stretch 4/10 compressed workweek schedule (Monday–Thursday) 2027 biweekly pay period calendar 2027 semi-monthly 24-period payroll schedule 2027 weekly 52-period pay calendar Business days in calendar year 2026 Business days in calendar year 2027 Add business days calculator