So if an hour is subtracted from the value on your side, I do suspect the timezone options of the computer are altered to the corresponding timezone. It's just a guess though, as without some code to inspect, there isn't really that much we could do.
I'd encourage you to send a runnable StackBlitz code examples like the following: https://stackblitz.com/edit/angular-7ymzib
If you could open the example, fork it, alter the code so that the issue is evident, and then send the page URL back, it would be really helpful.
Alternatively, create a new cli project, zip it, and send it over.
Looking forward to your reply.
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