Can the value of std::chrono::system_clock::time_point change based on the timezone?

I have been writing unit tests for a class in our codebase that basically converts date, time values from std::string to std::chrono::time_point and vice versa, for different kinds of timestamps (yyyy-mm-dd , hh:mm:ss.ms etc).

One way I tried to test whether a std::chrono::system_clock::time_point returned by a function in our codebase as the same as one created in the unit tests was to do something like this -

std::chrono::system_clock::time_point m_TimePoint{}; // == Clock's epoch
auto foo = convertToString(n_TimePoint); //foo is std::string
auto bar = getTimePoint(foo);
ASSERT_EQ(m_TimePoint, bar);

This was on Ubuntu , now the constructor should return a time point as UTC Jan 1 00:00:00 1970. Now when I used ctime() to see the textual representation of the epoch it returned Dec 31 19:00:00 1969. I was puzzled and checked that EST(my system timezone) is equal to UTC-5.

Once I created the object as -

std::chrono::duration d{0};
d += std::chrono::hours(5);
std::chrono::system_clock::time_point m_TimePoint{d}; //== clock epoch + 5 hours

All worked fine.

My question is it possible for the system clock epoch to be adjusted based on the system timezone?