Module:Bengali Unix Timestamp

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)
	if date then
		local day, month, year

		-- Format: DD-MM-YYYY
		day, month, year = date:match("(%d+)%-(%d+)%-(%d+)")

		-- Format: DD Month YYYY
		if not (day and month and year) then
			day, month, year = date:match("(%d+)%s+(%a+)%s+(%d+)")
			if month then
				month = month:sub(1,1):upper() .. month:sub(2):lower()
				month = MONTH[month]
			end
		end

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

		local timestamp = os.time{
			year = tonumber(year),
			month = tonumber(month),
			day = tonumber(day),
			hour = 0
		}

		-- Add 6 hours to convert to UTC+6 (Bangladesh Time)
		return timestamp + 21600
	else
		return os.time() + 21600 -- fallback to current time (UTC+6)
	end
end

function p._main(date)
	local UNIX, err = en_timestamp(date)
	if not UNIX then
		return nil, err
	else
		return UNIX - 1744610400
	end
end

function p.main(frame)
	local date = frame.args[1] or frame:getParent().args[1]
	local result, err = p._main(date)
	if result then
		return result
	else
		return err or "Invalid or missing date."
	end
end

return p
Usage
