Why do Christians go to church only on sundays? or sometimes Wednesday? Is that the only days to remember God(and when I say God, I mean the almighty unkown being)?

Whats the story behind this?

Muslims are recommended to go to there Church or Mosque/Masjid as often as possible. You can go to a Masjid anytime of the day and you will see people in there worshipping or praying or reading the Quran. I usually go once a day during my lunch break.

So why is only Sunday dedicated to Church? Explain please..