@reboot sleep 90 && /root/bin/Period.py > ~/skript.log 2>&1

 1898 ?        S      0:00 /usr/bin/python3.8 /root/bin/Period.py

 #!/usr/bin/python3.8
import pymysql
import sys
from time import sleep
import datetime
import os
try:
    conn = pymysql.connect(
        user="username",
        password = "passwd",
        host = "hostname",
        port = 3306,
        database = "db"
    )
except Exception as e:
    print(f"Error connecting to MariaDB Platform: {e}")
    sys.exit(1)
cur = conn.cursor()
def period():
    try:
        sleep(3600)
        while True:
            now = datetime.datetime.now()
            now = now.hour
            if int(now) == 0:
                cur.execute("SELECT * FROM `permissions`")
                base = cur.fetchall()
                i = 0
                lan = len(base)
                while i < lan:
                    period = int(base[i][4]) - 1
                    if int(period) >= 0:
                        cur.execute("UPDATE `permissions` SET `period`='" + str(period) + "' WHERE `userID`='" + str(base[i][1])+"'")
                        conn.commit()
                        sleep(2)
                        cur.close()
                        conn.close()
                    i += 1
                os.system("reboot")
            elif int(now) == 12:
                os.system("reboot")
            sleep(60)
    except Exception as e:
        print(e)
period()

 # cat ~/skript.log
Cursor closed

 wait_timeout        = 86400
interactive_timeout = 86400

 type(datetime.datetime.now().hour)
<class 'int'>

 >>> print(type(datetime.datetime.now().hour))
<class 'int'>
>>> print(type(now))
<class 'datetime.datetime'>