PrismKit計算機曆法轉換器曆法轉換器在瀏覽器中執行本機複製連結Markdown在公曆、伊斯蘭曆、希伯來曆、波斯曆、農曆等曆法，以及儒略日、Unix 時間與 Excel 序號之間轉換日期。iCal 合併工具Merge several .ics calendar files into one calendar, removing duplicate events and time zones.鬧鐘Set browser alarms for a date and time, chosen weekdays or a cron schedule in any time zone, with sound and notifications while the page is open.