getUTCDay
Platform and version requirements: JS (1.1)
fun getUTCDay(): Int© 2010–2023 JetBrains s.r.o. and Kotlin Programming Language contributors
Licensed under the Apache License, Version 2.0.
https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.js/-date/get-u-t-c-day.html