"A common year beginning on Monday",
jonstlouis.htmlplanet.com, 2011, webpage:
HTMcal[தொடர்பிழந்த இணைப்பு].
timeanddate.com
"Calendar in year 1810 (Russia)" (Julian calendar, starting Tuesday), webpage: Julian-1810 (Romania used Julian in 1919, when Russia adopted Gregorian).
wikipedia.org
en.wikipedia.org
"A common year beginning on Monday",
jonstlouis.htmlplanet.com, 2011, webpage:
HTMcal[தொடர்பிழந்த இணைப்பு].