Julian and Gregorian Calendar Transitions

Historical and genealogical records often use the civil calendar that was actually in force in their region.

In Settings, choose the transition convention Kaluach should use when displaying historical civil dates:

Before the selected transition, Kaluach displays the historically appropriate Julian civil date wherever civil dates appear in the app. Civil Month then shows Julian months — with the Russian setting, February 1700 has its 29th — and the month of the transition itself is shown as it was printed at the time: September 1752 (United Kingdom) runs 1–2 and then 14–30.

Years before the common era are shown with “BCE”; Go to Year accepts them as, for example, −500 or 500 BCE.

This is a display convention. It does not change zmanim, Hebrew-calendar navigation, or the way events are calculated or stored. After locating a historical day, create its event normally; the event retains its Hebrew date.