Adding 1 day to the date

Please see below

#Extract Business date from file

grok {
	match => ["file", "%{WORD}.%{WORD:BusinessDate}.%{GREEDYDATA:FileLastPart}"]		
}      

if "_grokparsefailure" in [tags] {		
	mutate {				
			remove_tag => ["_grokparsefailure"]		
	}				
}

#Parse Business date
	
grok {
	match => ["BusinessDate", "%{YEAR:year}%{MONTHNUM:month}%{MONTHDAY:day}"]
}      

if "_grokparsefailure" in [tags] {		
	mutate {				
			remove_tag => ["_grokparsefailure"]					
	}				
}

# Set Timestamp

mutate {
	add_field => {
		ExpectedTime => "03:00:00.000"
	}
}


mutate {
	add_field => {
		BusinesDateTime => "%{year}-%{month}-%{day} %{ExpectedTime}"
	}
}
#Not required ExptectedTime in output
mutate {
	remove_field => [ExpectedTime]
}


#Convert to Date
date
{
	match => ["BusinesDateTime", "YYYY-MM-DD HH:mm:ss.SSS"]		
	target => "BusinesDateTime"
}

#Adding one day to BusinessDateTime

ruby {
	code => 'event.set("BusinesDateTimeConverted", LogStash::Timestamp.new(Time.at(event.get("BusinesDateTime").to_f+86400)))'				
}
	
#Remove Milliseconds	
mutate {
	gsub => ["LogEventTimeStamp", "\.\d{3}$", ""]
}


#Setting up Log timestamp to LogEventTimeStamp for the given formats.
date
{
	match => ["BusinesDateTimeConverted", "yyyy-MM-dd HH:mm:ss", "MMM dd, yyyy HH:mm:ss", "yyyy-MM-dd HH:mm:ss,SSS", "yyyy-MM-dd HH:mm:ss.SSS"]		
	target => "BusinesDateTimeConverted"		
}

#Setting up Log timestamp to LogEventTimeStamp for the given formats.
date
{
	match => ["LogEventTimeStamp", "yyyy-MM-dd HH:mm:ss", "MMM dd, yyyy HH:mm:ss", "yyyy-MM-dd HH:mm:ss,SSS", "yyyy-MM-dd HH:mm:ss.SSS"]		
	target => "LogEventTimeStamp"		
}

#Date comparision
date
{
if "LogEventTimeStamp >= "BusinesDateTimeConverted" {
mutate {
add_field => {
"LateFileStatus" => "LateArrival"
}
}
} else {
mutate {
add_field => {
"LateFileStatus" => "On-Time"
}
}
}
}
#End of Date Comparision