Schedule Timer - Possibly working overboard on doing this?

I'm trying to generate a bell system relying on a table.. I feel like there's an easier method of checking what time its on, and using it to check what period its on. So far, here is my results. Although it's going great and barely working, Is there a better way to prevent un-necessary server load? I'm all in trying my best to keep the server working on important tasks like keeping players lag free..

PSchedules={
	{"TESTBLOCK",{
	--	name			time start	time end
		{"Period 1",	10,41,		10,43},
		{"Period 2",	10,45,		10,46},
		{"Period 3",	10,47,		10,49},
		{"Period 4",	10,50,		10,51}
	}}
}
require game.ServerScriptStorage.GetTime; --returns a function that gives back my current time in this format (return hour,min,sec,amORpm)
function StartBell(schedu)
	local bellloop=true
	local schn=tonumber(schedu)
	if schn~=nil then
		local hours,mins,secs,pm=GetTime()
		local checkloop=1
		local isonperiod=false
		for a=1,#PSchedules[schn][2] do
			print(hours,PSchedules[schn][2][a][2])
			if hours>=PSchedules[schn][2][a][2] then 
				if mins>=PSchedules[schn][2][a][3] then
					print("passd "..schn,a)
					checkloop=a
				end 
			end 
		end 
		if hours <= PSchedules[schn][2][checkloop][4] then
			if mins < PSchedules[schn][2][checkloop][5] then
				isonperiod=true
			end
		end 
		repeat
			hours,mins,secs,pm=GetTime()
			local remainmins=0
			isonperiod=false
			if hours <= PSchedules[schn][2][checkloop][4] then
				if mins < PSchedules[schn][2][checkloop][5] then
					if hours > PSchedules[schn][2][checkloop][2] then
						if mins >= PSchedules[schn][2][checkloop][3] then
							isonperiod=true
						end
					end 
				end 
			end 
			if isonperiod==true then
				print("Is On Period..")
				remainmins=0
				if hours < PSchedules[schn][2][checkloop][4] then
					remainmins=PSchedules[schn][2][checkloop][4]-hours
					remainmins=remainmins*60
					print("Added "..remainmins".. to remaining time..")
				end 
				if PSchedules[schn][2][checkloop][5] > mins then
					remainmins=remainmins+PSchedules[schn][2][checkloop][5]-mins
				end
				print("Remaining Time set to "..remainmins)
			else
				print("Is Not On Period..")
				if PSchedules[schn][2][checkloop]==nil then
					bellloop=false
					print("The bell could NOT find the next loop and died..")
				else
					if PSchedules[schn][2][checkloop][2]==hours then
						if PSchedules[schn][2][checkloop][3]<mins then
							checkloop=checkloop+1
							print("Added to next wait loop")
						end
					end
					if PSchedules[schn][2][checkloop][2]==hours then
						print("Waiting Till Next Period..")
						remainmins=0
						if hours < PSchedules[schn][2][checkloop][2] then
							remainmins=PSchedules[schn][2][checkloop][2]-hours
							remainmins=remainmins*60
						end 
						if PSchedules[schn][2][checkloop][5] > mins then
							remainmins=remainmins+PSchedules[schn][2][checkloop][3]-mins
						end
					end
				end 
			end 
			print("CurrentTime: "..hours..":"..mins)
			print("NextPeriodBeforeTime: "..PSchedules[schn][2][checkloop][2]..":"..PSchedules[schn][2][checkloop][3])
			print("NextPeriodAfterTime: "..PSchedules[schn][2][checkloop][4]..":"..PSchedules[schn][2][checkloop][5])
			print("RemainingMinutes: "..remainmins)
			print("CurrentSchedule: "..PSchedules[schn][1])
			print("CurrentPeriod: "..PSchedules[schn][2][checkloop][1])
			print("Is it that period?: "..(isonperiod and "true" or "false"))
			print("----------------------------------")
			wait(2)
		until bellloop==false
	end
	print("TheBellDied..")
	bellloop=false
end 
StartBell(1)

Am I going overboard on how to check for this information, or is their an easier way?