https://central.xero.com/s/question/0D58V00009RjWElSAN/what-is-the-cheapest-day-to-%F0%9D%92%87%F0%9D%92%8D%F0%9D%92%9A-with-delta%F0%9D%92%93%F0%9D%92%86%F0%9D%92%94%F0%9D%92%95%F0%9D%92%93%F0%9D%92%8A%F0%9D%92%84%F0%9D%92%95%F0%9D%92%94-%F0%9D%92%95%F0%9D%92%93%F0%9D%92%82%F0%9D%92%97%F0%9D%92%86%F0%9D%92%8D
