Names of the days of the week which is mainly based on a medieval version of Spanish, the five days of Monday–Friday closely follow the Spanish names. Sunday uses the Arabic name, which is based on numbering, because a Jewish language was not likely to adapt a name based on "Lord's Day" for Sunday. As in Spanish, the Ladino name for Saturday is based on "Sabbath". However, as a Jewish language—and with Saturday being the actual day of rest in the Jewish community—Ladino directly adapted the Hebrew name, "Shabbat". From Latin "Dominicus (Dominica)" or Greek Κυριακή (Christian Sabbath) After No Work. In Russian also "Day After Week(end)"
Determination of the day of the week week is where the positive modulus is chosen. The value of is obtained from the following table: The value of is obtained from the following table, which depends on the calendar. For the Gregorian calendar, For the Julian calendar, Charles Lutwidge Dodgson (Lewis Carroll) devised a method resembling a puzzle, yet partly tabular in using the same index numbers for the months as in the "Complete table: Julian and Gregorian calendars" above. He lists the same three adjustments for the first three months of non-leap years, one 7 higher for the last, and gives cryptic instructions for finding the rest;