Monday is the day of the week between Sunday and Tuesday. According to the international standard ISO 8601 it is the first day of the week. The name of Monday is derived from Old English Mōnandæg and Middle English Monenday, originally a translation of Latin dies lunae "day of the Moon".
The names of the day of the week were coined in the Roman era, in Greek and Latin, in the case of Monday as ἡμέρᾱ Σελήνης, diēs Lūnae "day of the Moon".
Most languages use terms either directly derived from these names, or loan-translations based on them. The English noun Monday derived sometime before 1200 from monedæi, which itself developed from Old English (around 1000) mōnandæg and mōndæg (literally meaning "moon's day"), which has cognates in other Germanic languages, including Old Frisian mōnadeig, Middle Low German and Middle Dutch mānendag, mānendach (modern Dutch Maandag), Old High German mānetag (modern German Montag), and Old Norse mánadagr (Swedish and Norwegian nynorsk måndag, Icelandic mánudagur. Danish and Norwegian bokmål mandag). The Germanic term is a Germanic interpretation of Latin lunae dies ("day of the moon").Japanese and Korean share the same ancient Chinese words '月曜日' (Hiragana:げつようび, Hangul:월요일) for Monday which means "day of the moon". In many Indo-Aryan languages, the word for Monday is Somavāra or Chandravāra, Sanskrit loan-translations of "Monday".