Jews do not refer to God as Allah and so do not have a day to worship Allah. Allah is a Muslim term for God.
Although in modern times it is very ecumenical to say that the Jews and Muslims worship the same God, many orthodox Jews and Muslims would disagree and so it is not proper to confuse the two religions and their doctrines, revelations, or types of worship.
The main day of worship on the western Gregorian calendar for Jews is Saturday. For the Muslims it is Friday.
Answer
Many Jews from Arab countries do in fact use the name Allah when referring to God. Religious Jews pray 3 times a day, every day. Shabbat starts Friday at sundown and ends Saturday night. Prayers are done 4 times on Saturday.
Prayer
Every darn day
The two main references of worship in Islam are the holy Quran and the Sunna (prophet Muhammad sayings and practices).
I say Easter, as Jesus Christ rose from the dead.
The main feature of worship in Islam is Five Times a day offering of Prayer (Salat). It is compulsory for all grown up (age-11 years) Muslims. It is generally offered in a Mosque behind an Imam (Leader). It may, however, be offered individually at home or at any other pure place.
Salah ( namaz) is the main ritual in islam. Then comes Roza (fasting) and zakah (alms).
Islam is the religion, Muslims are the ones who follow the religion. They do not "worship" Islam, as Christians don't worship Christianity.
The islam worship in a building called the masjid
The language used in Islam worship is Arabic.
Followers of Islam go to a mosque to worship.
The main form of worship in Islam is prayer, known as salah in Arabic. Muslims pray 5 times a day to God, asking for forgiveness and guidance. Muslims also go to the mosque on Friday for the Friday prayers, where the imam, or leader, gives a sermon, and then a combined prayer follows.
Yes of course. Monotheism is the main concept of Islam. Muslims believe in & worship the only one God with no-one is associated to Him.