helper methods	result type	parameters
parse	date	text or number		https://date-fns.org/v1.30.1/docs/parse
today	date			https://date-fns.org/v1.30.1/docs/startOfToday
addDays	date	base date	number of days to add	https://date-fns.org/v1.30.1/docs/addDays
addWeeks	date	base date	number of weeks to add	https://date-fns.org/v1.30.1/docs/addWeeks
addMonths	date	base date	number of months to add	https://date-fns.org/v1.30.1/docs/addMonths
addYears	date	base date	number of years to add	https://date-fns.org/v1.30.1/docs/addYears
subDays	date	base date	number of days to subtract	https://date-fns.org/v1.30.1/docs/subDays
subWeeks	date	base date	number of weeks to subtract	https://date-fns.org/v1.30.1/docs/subWeeks
subMonths	date	base date	number of months to subtract	https://date-fns.org/v1.30.1/docs/subMonths
subYears	date	base date	number of years to subtract	https://date-fns.org/v1.30.1/docs/subYears
age	number	birth date
new	date	year, month, day
dayOf	number			https://date-fns.org/v1.30.1/docs/getDate
dayOfWeek	number			https://date-fns.org/v1.30.1/docs/getDay
daysBetween	number			https://date-fns.org/v1.30.1/docs/differenceInDays
monthOf	number			https://date-fns.org/v1.30.1/docs/getMonth
monthsBetween	number			https://date-fns.org/v1.30.1/docs/differenceInMonths
yearOf	number			https://date-fns.org/v1.30.1/docs/getYear
yearsBetween	number			https://date-fns.org/v1.30.1/docs/differenceInYears