Module:Bengali Calendar Epoch Offset

local p = {}
local MONTH = {
	January = 1, February = 2, March = 3, April = 4, May = 5, June = 6,
	July = 7, August = 8, September = 9, October = 10, November = 11, December = 12
}

local function en_timestamp(date)
	local input =  date
	local timestamp
	local year, month, day
    if date then
	day, month, year = input:match("(%d+)%-(%d+)%-(%d+)")
    

	if not (year and month and day) then
		day, month, year = input:match("(%d+)%s+(%a+)%s+(%d+)")
		if month then
			month = MONTH[month]
		end
	end

	if not (year and month and day) then
		return "Invalid date format. Use DD-YYYY-MM or DD Month YYYY."
	end

    timestamp = os.time{
		year = tonumber(year),
		month = tonumber(month),
		day = tonumber(day),
		hour = 0
	}
	else
	
	timestamp = os.time()
    end
    
	timestamp = timestamp - os.difftime(os.time(), os.time(os.date("!*t"))) + 21600
	return timestamp
	
end



function p.main(frame)
	local UNIX = tonumber(en_timestamp(frame.args[1]))
	local BN_UNIX = UNIX - 1744610400
	return BN_UNIX
end
return p