code: def get_epoch_beginning_of_time(timezone_info=None):
      return datetime(1970, 1, 1).replace(
          tzinfo=timezone_info if timezone_info else utc_timezone
      )
  
imports: import getpass
  import re
  from _socket import gethostname
  from datetime import datetime
  from typing import Optional, Any
  from ..backend_api.services import projects, queues
  from ..debugging.log import get_logger, LoggerRoot
label_desc: Use image node_id 8 for calling a global function with example usage: get_epoch_beginning_of_time(timezone_info) and returns: datetime