the annual recurrence of a date marking a notable past event

the duration of time required for a recurring motion or process to complete one full cycle

every week

a periodical or publication issued once every week

Golden Week, two 7-day national holiday periods in China

The quality or state of being periodic, or recurring at regular intervals or in cycles.

to travel extensively from place to place; to journey around

one full year (e.g. on child's first birthday)

the periodic table of the chemical elements

periodic solution (math.)

periodic number

have a nice weekend!

(Tw) a two-day weekend, usually referring to Saturday and Sunday

to rent by the week

(math.) double periodicity

the duration of a development process from start to finish

Newsweek magazine

a recurring industry event, typically lasting one week, where fashion designers, brands, or fashion houses display their latest collections in runway shows to buyers and the media.

Charlie Hebdo (French satirical magazine)

once a week

the week preceding Easter in the Christian calendar, commemorating the Passion of Christ

Jane's Defence Weekly (military magazine)

the systematic classification and arrangement of chemical elements according to their atomic numbers and recurring chemical properties

periodic table of the elements (chemistry)