Custom Zmanim Shitot

A custom shita lets you assemble one practical schedule from the supported shitot for individual zmanim.

Creating a shita

In Location Settings, click Custom Shita… beside the Zmanim Shita list. A new shita can start from any built-in shita (Start from) — its choices are copied as a starting point, without linking to it. Give the shita a name and select a shita for each zman that has more than one available calculation, or leave it at None to show every shita for that zman.

Under Tzeit Shabbat there is one extra line, Also show, for a second end of Shabbat and Yom Tov: None, Rabbeinu Tam (the later of 72 minutes and 72 proportional minutes after sunset), Rabbeinu Tam (Fixed) (72 minutes), or Rabbeinu Tam (Proportional). A choice here wins over the location’s Rabbeinu Tam checkbox, so a community can save exactly the pair of times it uses; with None, the checkbox applies.

Hanetz hachama and Shkiat hachama are omitted because each has only one value in the app. The zmanim are listed in a readable daily sequence; Tchilat Taanit appears beside Sof Taanit because the two are easier to understand together.

Using and editing shitot

Saved custom shitot appear in the Zmanim Shita list after the built-in ones, in Location Settings and in Print Year. To revise one, choose it and click Edit Shita; the same window can Delete Shita. Locations that used a deleted shita show every shita.

Chabad-specific entries

Mincha Gedolah (Preferred) and Chatzot Halaylah appear only when the selected shita uses Chabad’s shita for at least one other zman. They remain hidden for shitot unrelated to Chabad.

A custom shita is a convenience, not a new halachic authority. Choose its component shitot according to the guidance and practice you follow.