Monday named after Moon
Monday is the day of the week between Sunday and Tuesday. According to the International Organization for Standardization's ISO 8601 standard, it is the first day of the week and in countries that adopt the "Sunday-first" convention, it is the second 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".Names
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".Many 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, translit. getsuyо̄bi, 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".In some cases, the "ecclesiastical" names are used, a tradition of numbering the days of the week in order to avoid the "pagan" connotation of the planetary names, and to keep with the biblical name, in which Monday is the "second day" (Hebrew יום שני, Greek Δευτέρα ἡμέρα (Deutéra hēméra), Latin feria secunda, Arabic الأثنين).
In many Slavic languages the name of the day translates to "after Sunday/holiday". Russian понедельник (ponyedyelnik) literally translated, Monday means "next to the week", по "next to" or "on" недельник "(the) week" Croatian and Bosnian ponedjeljak, Serbian понедељак (ponedeljak), Ukrainian понеділок (ponedilok), Bulgarian понеделник (ponedelnik), Polish poniedziałek, Czech pondělí, Slovak pondelok, Slovenian ponedeljek. In Turkish it is called pazartesi, which also means "after Sunday".Hinduism
In Hinduism, Mondays are associated with the Hindu god of the moon Chandra or Soma. In several South Asian languages, Monday is knowns as Somavara. Hindus who fast on Mondays do so in dedication to the deity Shiva. Some observe the Solah Somvar Vrat, which is a fast of sixteen Mondays dedicated to Shiva in hopes of getting married and finding a suitable partner. Fasting on Mondays in the Hindu month of Shravana is also considered auspicious as it is one of the holiest months to Hindus and dedicated to Shiva and his consort Parvati.
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