Birthday Reminders from your Google Calendar sent to your Amazon device and to your phone.
In order to get most out of this skill follow these steps:
1) Enable the skill 2) Give the skill reminder permission 3) Authenticate with your Google Account 4) Add Birthdays into you Google Account if you haven't already. It can be something like "John's birthday". The skill will find any event that contains "birthday" string in it 5) Say, "Alexa, open Birthday Book". And follow the skill.
You can ask for birthdays from different periods and also receive reminders from upcoming birthdays.
Note: The skill sends reminders to your phone as well.
Future Improvements: 1) To have the possibility of changing the reminder time; 2) To have the possibility of changing the default period that you want to hear birthdays from;