Shomer Shabes Advantages

Shomer Shabes updates the repository of locations of in the world each month. For general education, at the beginning Shomer Shabes' repository contained approximately -1.8 million records and today it contains nearly 5 million records.
It is important to realize that just to update the database takes about 3 working days of an engineer, including conversion to fast format and adjustments to the different cities (all cities) of the world.
All this to provide a real answer for Shabbat observation on the internet in all regions of the world at any time.