no stamp for my parents when they came to canada from usa

[ganapathi]

HI
My parents came on october 24 2018 from india to canada on visitor visa. they have stamp on their passport.this mean they can stay in canada for 6 months i.e until april 23rd 2019

But in december 2018 they visited my brother for a week and returned back to canada on jan31. i see there is no stamp on their passport.

This means they have to leave canada by april 23rd or does 6 months time count from the day they returned to canada from usa i.e jan31st

please help me

 

[Bryanna]

HI
My parents came on october 24 2018 from india to canada on visitor visa. they have stamp on their passport.this mean they can stay in canada for 6 months i.e until april 23rd 2019

But in december 2018 they visited my brother for a week and returned back to canada on jan31. i see there is no stamp on their passport.

This means they have to leave canada by april 23rd or does 6 months time count from the day they returned to canada from usa i.e jan31st

please help me

Please stop creating multiple threads for variants of the same question:

Your question was already answered here:
https://www.canadavisa.com/canada-immigration-discussion-board/threads/stay-on-visitor-visa.616577/

and here:
https://www.canadavisa.com/canada-immigration-discussion-board/threads/what-does-multiple-entry-visa-means.616603/