Are you sure you want to delete this post?
Don't think you can. I think you only can if you also getting SSDI benefits as well.
Here's the official calendar for 2019. It's supposed to be paid out on the first of every month, unless that falls on a holiday or non-banking weekend day, like Sunday I believe.
How Are Payment Dates Chosen for SSDI and SSI?
Here's an article as well, explaining this.