Filter: mc_month_format - My Calendar Hook Doumentation

Filter the date format used for next link if the next link is in a different year.

Name	Type	Description
`$format`	string	PHP Date format string.
`$date`	array	Current date array.
`$format`	string	View format.
`$time`	string	View time frame.
`$month`	string	month used in navigation reference (next month.)

Source:

Filter the date format used for next link if the next link is in the same year.

Name	Type	Description
`$format`	string	PHP Date format string.
`$date`	array	Current date array.
`$format`	string	View format.
`$time`	string	View time frame.
`$month`	string	month used in navigation reference (next month.)

Source:

Filter the date format used for previous link if the previous link is in the same year.

Name	Type	Description
`$format`	string	PHP Date format string.
`$date`	array	Current date array.
`$format`	string	View format.
`$time`	string	View time frame.
`$month`	string	month used in navigation reference (previous month, generally.)

Source: