PS : I am working on event blog
If the keyword is already present in your domain name, then you don’t really need to mention it again in the permalink @amit_kakkar.
Take this for example: happyvalentinesday.com
Suppose if you want to publish an article about ‘wallpapers,’ ‘quotes,’ ‘WhatsApp statuses,’ etc. then you can keep the overall URL like: 'happyvalentinesday.com/wallpapers,’ etc.