Skype has option to schedule calls – here's how to use it.

[Windows Central]

Skype lets you schedule calls, and in this guide, we'll show you the steps to perform this task.
On Windows 10, the Skype app allows you to schedule calls, which you can use as a reminder for important calls with family or friends without the need to share a calendar or sending emails.
When you use the schedule a call option on the app for Windows 10, you'll receive a notification once the invitation is accepted or declined. If you're using the mobile app, both parties will get notifications for any updates, and you can set a reminder before each call, and the invitation will appear in the "Calls" tab.

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