Enter in the name you would like to call your time helper. Select an icon if you like. Leave the duration set on 00:00:00 as the automation will apply your setting to this. Click “restore?”, this will restore / keep the time helper going if you restart Home Assistant.
Your done. Now just add the time helper into your automation.
TIP: If you add your time helper into a dashboard and you click on it you will be able to pause, cancel or finish it.
New branding from “Time Clock” to “Timer”. If you have version 1.0 you will need to delete the old blueprint and reinstall again as the file location has changed to. Sorry by bad.
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I had this confused with the timer entity while in fact it is more like a timer-based schedule with fixed start and end times.
I don’t want to tell the master of blueprints how to make a blueprint, so this is more out of curiosity: what are the benefits of an automation with a timer over an automation with statis start and stop times?
I’m a fan of your blueprints. Keep up the good work <3
The good thing with a timer is that it survives a restart and the time just continues on if you set it up correctly. Also if you restart HA and at the time you ask it to turn OFF, it is the exact time HA restarts then it will stay ON. How many time would this happen? probably a very rare occasion but is nice to know that if you start somting it you give it your best shot to make sure you turn it OFF. I do like it when you can just set the ON and OFF time with not having to do any maths, but unlike a local timer with a battery back-up this can help.
Thank you for the explanation. Good to know that timers survive a reboot (with some left over fringe cases).
In this particular blueprint, the start time appears statis, so the end time is also statis.
A start time at 7:15 with a duration of 15 minutes would be the same as start time 7:15 and end time 7:30.
I did think if a use case where I would want to adjust or extend the timer in certain events. This is not possible with a static end time, so your choice to use a timer seems to be more future/feature proof.
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The Automation Process:
CHANGELOG
MY OTHER BLUEPRINTS
Sensor Light - Motion Sensor - Door Sensor - Sun Elevation - LUX Value - Scenes - Time
Sensor Light Add On - Media & Movie Lights - House Alarm Lights - Smoke Alarm Lights & Exhaust Fans + More
Bathroom Humidity Exhaust Fan
Low Battery Notifications & Actions
Appliance Notifications & Actions - Washing Machine - Clothes Dryer - Dish Washer - ETC
Calendar Notifications & Actions
State Notifications & Actions
Toilet Exhaust Fan with time delay 
Entity - Run ON Timer
Trigger - Run ON Timer
Turn Light, Switch or Scene On & Off with Trigger Conditions
Manual light control with auto OFF
Closet, Pantry, and Cupboard Lighting
Temperature Control Exhaust Fan
Temperature Control Exhaust Fan - Inverted
Toggle Switch - Turn ON & OFF Entities
Press Button - Turn ON & OFF Entities
Switch - Turn ON & OFF Entities 
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