Expiration time not same on admin panel and live site

My listing expiry time showing 5:30 Hrs extra.

example: My server time is 5:00 AM

I put Expiry time is 6:00 AM for same day. So, the expiration time is 1 Hr.

But its showing listing will expire in 6 Hrs 30 Minutes.

i wait for the 1 Hr and checked the listing expired in 1 Hr that was the actual expiration time.

But the problem is if you check my website just before 1 minute of actual expiration time shows expire in 5Hr 31 minutes but after 1 minute it will expired.

I checked my admin panel and notice that the expiration time on admin panel is correct but on live site its not correct. I capture the screen at same time for live site and admin panel for reference.

My server time is correct and its utc+5:30
please check.