Convert vimwiki diary format to Emacs Org-Journal format

vimwiki-diary-convert.py

import datetime
import os

time = datetime.time(tzinfo=datetime.timezone(datetime.timedelta(0)))
time = time.strftime("%H:%M:%S %z")

for entry in os.listdir():
    if not entry.endswith(".py"):
        date = datetime.date(int(entry[:4]), int(entry[4:6]), int(entry[6:]))
        date = date.strftime("%Y-%m-%d %a")
        with open(entry) as f:
            text = f.read()
        with open(entry, 'w') as f:
            f.write("* {}\n\n** {}\n{}".format(date, time, text))