Hi @doris.l !
It looks like the value you are passing into moment is not being treated as a UTC timestamp. If you run console.log(moment('2021-06-21 17:23:37.000')) the _isUTC value is set to false which is then causing the timezone conversions to be incorrect. Using moment.utc('2021-06-21 17:23:37.000') will force this to be a UTC moment object and then you can parse it with the timezone:
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