Вопрос Время на сервере

import moment from 'moment-timezone';
import { readable, derived } from 'svelte/store';

/*export default (time, format) => {
    if (!time) return moment().tz("Europe/Moscow").format(format);
    else return moment(time).tz("Europe/Moscow").format(format);
}*/


export let TimeFormat = (time = undefined, format = undefined) => {  
    return moment(time).tz("Europe/Moscow").format(format);
}

export let TimeFormatStartOf = (time = undefined, unitOfTime = undefined) => {
    return moment(time).tz("Europe/Moscow").startOf(unitOfTime).fromNow();
}

export let TimeFormatEndOf = (time = undefined, unitOfTime = undefined, format = 'YYYY-MM-DD HH:mm:ss') => {
    return moment(time).tz("Europe/Moscow").endOf(unitOfTime).format(format);
}

export const TimeFormatStartOfReadable = (time = undefined, unitOfTime = undefined) => readable(null, function start(set) {
    const interval = setInterval(() => {
        set(moment(time).tz("Europe/Moscow").startOf(unitOfTime).fromNow());
    }, 1000);

    return function stop() {
        clearInterval(interval);
    };
});



//moment(message.Date).startOf('hour').fromNow()

export let GetTime = (time = undefined) => {  
    return moment(!time ? window.serverStore.getDateTime() : time).tz("Europe/Moscow");
}

let updateTime = false;

export const setTime = (dateTime) => {
    updateTime = GetTime (dateTime);
};

export const time = readable(new Date(), function start(set) {
    const interval = setInterval(() => {
        set(GetTime ());
    }, 50);

    return function stop() {
        clearInterval(interval);
    };
});

export const elapsed = derived(
    time,
    $time => {
        if (updateTime === "-")
            return;

        return GetTime (updateTime).diff($time);
    }
);

export const elapsedUp = derived(
    time,
    $time => {
        if (updateTime === "-")
            return;

        return GetTime ($time).diff(updateTime);
    }
);