datas.mpelab.dev
The date, with the rule beside it.
Countdowns, business days, adding days, US federal holidays for 2026 and 2027, and age counted in real calendar days.
Tools
Countdown
Each row is the next occurrence, in calendar days, using the clock on your device.
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Business days
The range includes the start and the end when they are business days. Saturday and Sunday are out.
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Add days
Calendar days cross the weekend. Business days use the same holiday switch as the business-day counter.
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US federal holidays
Pick 2026 or 2027. The table uses the calendar date. When a holiday falls on a weekend, many offices observe a weekday, and that shift is not applied here.
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Age in days
Calendar age moves forward when the day of the month comes around again. In a common year, a February 29 birthday completes the year on February 28.
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