Force Syncing System time (When NTP Not available)

time.py

import sys
from datetime import datetime

import fire
import requests


class SyncError(Exception):
    def __init__(self, message):
        self.message = message

    def __str__(self):
        return self.message

    def __repr__(self):
        return f"SyncError('{self.message}')"


class WorldTimeApiClient:
    def get_api_datetime(self, tz: str) -> datetime:
        response = requests.get("http://worldtimeapi.org/api/timezone/" + tz)
        data = response.json()
        if data.get("error"):
            raise SyncError("API Error: " + response.json()['error'])

        return datetime.fromisoformat(response.json()['datetime'])


class TimeSyncApplication:
    def view(self):
        client = WorldTimeApiClient()
        sys.stdout.write(client.get_api_datetime("UTC").isoformat())

    def sync(self):
        client = WorldTimeApiClient()
        server_time = client.get_api_datetime("UTC")

        if sys.platform == "win32":
            from win32 import win32api
            win32api.SetSystemTime(server_time.year, server_time.month, server_time.isocalendar()[2], server_time.day, server_time.hour, server_time.minute, server_time.second, 0)

        else:
            raise SyncError("Not supported platform: " + str(sys.platform))


if __name__ == "__main__":
    fire.Fire(TimeSyncApplication)

requirements

pywin32==224
requests==2.21.0
fire==0.1.3

Usage Example

python app.py sync