Is there any significance to turning 27 on 27th of 7th month on 7th day of the week?

In some cultures numbers are assumed have a special significance. For example, the Chinese consider the number '8' to be very lucky and auspicious, which is why the Olympic games in China began on 8/8/2008, as it was the 8th day of the 8th month of the 8th year of this millennium, and why many Chinese couples chose to get married on that particular day. In China, '7' is considered to be a slang /vulgar Word in Cantonese, and biblically the Hebrews considered '7' to be 'complete, full, spiritual perfection'.

However, there is no significance as far as either Catholicism or Protestantism is concerned - it means nothing. Turning the age that coincides with the calendar day you were born is called your "champagne birthday" and is a cultural milestone. Cheers!

If it does not occur on year ending in 77, then it does not mean a thing. Post the question again in year 2077.