in atlas-core/src/main/scala/com/netflix/atlas/core/util/IsoDateTimeParser.scala [56:68]
private def normalize(str: String): String = {
str match {
case IsoDate(d) => s"${d}T00:00:00"
case IsoDateZ(d, z) => s"${d}T00:00:00${normalizeZone(z)}"
case IsoDateTimeHHMM(d) => s"$d:00"
case IsoDateTimeHHMMZ(d, z) => s"$d:00${normalizeZone(z)}"
case IsoDateTimeHHMMSS(d) => d
case IsoDateTimeHHMMSSZ(d, z) => s"$d${normalizeZone(z)}"
case IsoDateTimeHHMMSSmmm(d) => d
case IsoDateTimeHHMMSSmmmZ(d, z) => s"$d${normalizeZone(z)}"
case _ => str
}
}