Suggest networking outside of 9-5?

I’m a rising junior interning at a 9-5 job at New York City this summer. I want to network with people (alums) in banking but it’s difficult for me to take calls or meet people during work hours. How should I go about this?

Is it fine if I suggest that we talk after 5pm? Will it inconvenience the people I’m trying to network with? I know bankers work long hours but is it harder to take a call in the evening instead of the afternoon? What about weekends? I've heard suggesting this is frowned upon since no one wants to talk to some overeager college kid on days they have off.

Everyone's been suggesting we meet during the workday for every call/coffee meeting I've tried to set up so far.

Any advice would be much appreciated.