[REQUEST~GUIDE]How to make a Timer

[StarEvaAfta!~]

Hei all, i need a guide to make a timer, ive made the start but i want to end it

                                        if (DateTime.Now.DayOfWeek == DayOfWeek.Sunday)
                                        {
                                            if (DateTime.Now.Hour == 13 && DateTime.Now.Minute >= 59)

Please someone gimme a guide to do that

[StarEvaAfta!~]

# removed, spamming and i didn know