convert valid date '6th aug 2021' in javascript
.format('L') // 06/09/2014
.format('l') // 6/9/2014
.format('LL') // June 9 2014
.format('ll') // Jun 9 2014
.format('LLL') // June 9 2014 9:32 PM
.format('lll') // Jun 9 2014 9:32 PM
.format('LLLL') // Monday, June 9 2014 9:32 PM
.format('llll') // Mon, Jun 9 2014 9:32 PM