This is because the Julian calendar (from which the Easter date is calculated) deviates from the Gregorian by one day for each century-year that is NOT a leap-year, i.e. (In the old Julian reckoning, EVERY 4th year was a leap-year.) This algorithm was first proposed by the mathematician/physicist Gauss.Its complexity derives from the fact that the calculation is based on a combination of solar and lunar calendars.
Since 5.6.23, Relative Formats for the start of the week align with ISO-8601 (1=Monday,7=Sunday).
( can produce different, and seemingly incorrect, results depending on your PHP version and your choice of 'w' or 'N' for the Numeric representation of the day of the week: Prior to PHP 5.6.23, this results in: Today is Sun , day 0 of this week.
When escaping, be sure to use single quotes to prevent characters like \n from becoming newlines.
in the "datetime" attribute you should put a machine-readable value which represent time , the best value is a full time/date with ISO 8601 ( date('c') ) ,,, the attr will be hidden from usersand it doesn't really matter what you put as a shown value to the user,, any date/time format is okay !
Day 1 of next week is It's common for us to overthink the complexity of date/time calculations and underthink the power and flexibility of PHP's built-in functions.
Consider One important thing you should remember is that the timestamp value returned by time() is time-zone agnostic and gets the number of seconds since 1 January 1970 at UTC.
An empty string indicates the beginning of the day.
The date string format is more complex than is easily documented here but is fully described in the info documentation.
Convert seconds since the epoch (1970-01-01 UTC) to a date $ date --date='@2147483647' Show the time on the west coast of the US (use tzselect(1) to find TZ) $ TZ='America/Los_Angeles' date Show the local time for 9AM next Friday on the west coast of the US $ date --date='TZ="America/Los_Angeles" next Fri' The --date=STRING is a mostly free format human readable date string such as "Sun, -0800" or "2004-02-29 " or even "next Thursday".
A date string may contain items indicating calendar date, time of day, time zone, day of week, relative time, relative date, and numbers.
When using dynamically generated date formatting string, be careful to generate the correct options for either PHP or My SQL.