What is the cheapest day to buy Spirit airline tickets?

𝕎𝕙𝕒𝕥 𝕕𝕒𝕪𝕤 𝕒𝕣𝕖 𝕤𝕡𝕚𝕣𝕚𝕥 𝕕𝕚𝕤𝕔𝕠𝕦𝕟𝕥𝕤? 𝕊𝕡𝕚𝕣𝕚𝕥 𝔸𝕚𝕣𝕝𝕚𝕟𝕖𝕤 𝕚𝕤 𝕜𝕟𝕠𝕨𝕟 𝕗𝕠𝕣 𝕠𝕗𝕗𝕖𝕣𝕚𝕟𝕘 𝕚𝕥𝕤 𝕔𝕙𝕖𝕒𝕡𝕖𝕤𝕥 𝕗𝕝𝕚𝕘𝕙𝕥𝕤 𝕠𝕟 𝕠𝕗𝕗-𝕡𝕖𝕒𝕜 𝕕𝕒𝕪𝕤, 𝕡𝕒𝕣𝕥𝕚𝕔𝕦𝕝𝕒𝕣𝕝𝕪 𝕠𝕟 𝕋𝕦𝕖𝕤𝕕𝕒𝕪𝕤, 𝕎𝕖𝕕𝕟𝕖