DatePicker.shinyinput date format

[kapitalistn]

By choosing for example 12 September 2022 it returns 2022-09-11T22:00:00.000Z
How do i change it to 2022-09-12?

ui <- fluentPage(
DatePicker.shinyInput("date_start",
label = "From")
uiOutput("test_date")
)
server <- function(input, output) {
output$test_date <- renderText(input$date_start)
}

[kapitalistn]

Found solution with:
format.POSIXct(as.POSIXct(input$date_start, tz = "UTC", format = "%Y-%m-%dT%H:%M:%S.000Z"), format = "%Y-%m-%d", tz = Sys.timezone())