As the Biblical story has it, on that day the Holy Spirit descended on them.
Approximately 50 days.
Friday is used as a day of fasting by some Christians.
All Christians gather to attend the Eucharistic Celebration or the Holy Mass to celebrate the day when Jesus Resurrected.
Pentecost (meaning the fiftieth) is celebrated seven weeks (50 days) after Easter Sunday.
No one thing happens to all Christians at the same time.
No
Primarily, Christians worship in churches on Sundays.
Because christians believe that Sunday was the day of rest and prayer so it's seen as a holy day and so that is the main day when christians have special services on Sundays.see link " How Sunday Became the Popular Day of Worship"
There is no one way Christians celebrate Christmas. It is up to the individual to decide how to do that. Most Christians go to Church on Christmas Day and spend the day with friends and family
Sundays, as Sunday is a holy day for Christians as the day on which Jesus resurrected from the dead.
Syrian Christians speak Arabic on a day-to-day basis. They use Syriac as a liturgical language.
We are asleep in the lord and we turn to dust.