Makomly
Schedule Assessment
Hebrew Calendar Engine

Location-Aware Hebrew Date & Yahrzeit Calculations

Prevent conversion mistakes. Automatically convert Gregorian dates to Hebrew dates based on physical coordinates and sunset times.

The Challenge of Sunset Conversions

In Jewish tradition, the day starts at sunset (Tseis HaKochavim), not midnight. This makes tracking yahrzeits (anniversaries of deaths), births, and bar/bat mitzvahs complicated. If a death occurs on a Tuesday night after sunset, the Hebrew Yahrzeit is actually recorded as Wednesday.

Makomly solves this by using geographic coordinates for your synagogue. When entering dates, administrators select a simple toggle: **"Occurred After Sunset (Tseis)?"**. The database automatically calculates the exact local sunset for that date and location, converting the Gregorian date to the correct Hebrew day.

How Makomly Automates Synagogue Date Schedules

Input Date
June 23, 2026
Location Data
Synagogue Latitude & Longitude Configured
After Sunset Toggle
Checked (After Sunset / Tseis)
Resulting Hebrew Date: 9 Tammuz 5786 (Shifted to Next Day)

Plaque Assignments & Aliyah Tracking

Once calculated, Yahrzeits are linked to specific memorial plaques inside the sanctuary. Makomly alerts administrators when a plaque needs light bulbs turned on, automatically updates weekly service bulletin templates with names, and prints scheduling sheets for Aliyahs (Torah honors).

Date Engine Highlights

Sunset Dynamic Shift

Uses longitude/latitude calculations to determine exact sunset times for any date in history.

Auto-calculated Anniversaries

Calculates Hebrew anniversaries decades in advance and generates matching secular calendars for staff.

Plaque Mapping Coordinator

Maps Hebrew names to custom physical row/column numbers of wall plaques for easy tracking.

Schedule a 15-Minute Workflow Assessment

See how Makomly automates your synagogue's events, seating maps, and dues without database migration or double-entry bookkeeping.

No database migration required to get started. Keep your current systems.