User Guide

Tahara-Date

User Guide

🚀 Quick Start – First Steps

1 On first launch, the System Settings screen appears – choose your community's custom (Sephardic / Ashkenazi / Custom). You can change this at any time.
2 Next, the Name and Password screen appears – the first time, choose any name and password you like. You will be asked to enter them each time you open the software.
3 To change the interface language, open the Tools menu and choose English or Hebrew.
4 The main screen has three areas: the calendar in the center, the list of days on the side, and the selected day details at the bottom.

📅 Entering a Period Date (Re'iyah)

1 Double-click a day in the calendar – the period-entry screen opens with the selected date.
2 Alternatively – click the Add icon on the toolbar.
3 On the data-entry screen fill in: the Hebrew date on which the period began, the onah (day or night), and the duration of the period in days.
4 Click OK to save. You can go back and edit at any time.

"Special types" field:
• Birth date – prevents calculating non-fixed vestos before this date.
• Sighting not for calculation – a sighting from an examination only, or a sighting unlike the others (relevant to the ruling of Shevet Halevi).

📊 Reading the Days of Separation

1 Click the Days to Observe icon on the toolbar – the list on the side shows all the days of separation.
2 Double-click a row in the list – the calendar jumps automatically to that day and marks it.
3 At the bottom of the screen, a detailed explanation of the reason for separation on the selected day is shown.

🔍 Calendar Symbols – What Do They Mean?

Symbol	Meaning
Gray circle	Separation required. Right side = night, left side = day
Red circle	Or Zarua observance (for those who follow it)
? mark	Complex case – consult a Rav
Right side of a cell	Night onah
Left side of a cell	Day onah
Hebrew date – top	The Hebrew date of the day
Gregorian date – bottom	The Gregorian date of the day

⚙️ Custom (Minhag) Settings

Available options:
• Sephardic custom | Sephardic – stringent
• Ashkenazi custom | Ashkenazi – stringent
• Custom – choose each parameter separately (short haflagah, onah beinonis, Or Zarua and more)

How to change: Tools → Settings, or click the Settings icon on the toolbar.

If you are unsure which settings match your custom – please consult a Rav.

💾 Data Backup

1 To locate the folder: press Windows + R, paste %AppData%\..\Local\TaharaDate and press Enter.
2 Alternatively, from within the software: Help → Open Data Folder.
3 Copy these three files to an external drive or cloud storage: Net.ndd, def.net, Net.ndd.csv.

🔑 Name and Password

First launch: choose a name and password of your choice. The password is entered twice for confirmation.

Changing the password: Tools → Change Name and Password menu (shortcut: Z)

The password protects your data – only someone who knows it can open the software.

Need more help? We're happy to assist.

📧 info@tahara-date.co.il