for Atom and RSS and KML
It looks like this is a web page, not a feed. I looked for a feed associated with this page, but couldn't find one. Please enter the address of your feed to validate.
<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="390"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "200205.mit-edu.top",cType: 'managed',cRay: '90fb25733c020610',cH: 'IaSmQ3lE2pcp9mj1g40MQEBbXOv.0UWVX9_42ke.CbM-1739180516-1.2.1.1-MMVbuI1o_sOHJYHQf5g5El.9PJ7jc2OKqSZhTI605L7PWQCRH9LeflhvMKBV0Csf',cUPMDTk: "\/post\/3506187492?__cf_chl_tk=5Xml8ejssWaAti_V8xZSHyU44aCP7N13_oUC8SIOqNA-1739180516-1.0.1.1-RKzLyo5rkJ.gZzZGomVfDkrTNUkzP4AvwLVQbaGty4k",cFPWv: 'g',cITimeS: '1739180516',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/3506187492?__cf_chl_f_tk=5Xml8ejssWaAti_V8xZSHyU44aCP7N13_oUC8SIOqNA-1739180516-1.0.1.1-RKzLyo5rkJ.gZzZGomVfDkrTNUkzP4AvwLVQbaGty4k",md: "CRcoB_XDYylSCCRpY9NEuIYOOTHtEcmjHURcWHjLmA4-1739180516-1.2.1.1-6DvVZ3uej0qnb1fp9HmW7HX4QdAxwvCfCrQm9yFzd4zNEktFiPyWcYFL3LmDqrmxqicHzRqGOOf9fjO.t2FsqQBPjWx.t2.pPuN2HaxQLVikVWJy1OSjSc0eqYhYJyZtN49XORhKUoMKhRtcx2F8KjQYZjU4I_8BMO6gbPpBmHJcuY_TraMFjKvFeeZHiTRbBbZMFTbg9m6cevgzr6iqLMy6yNwAnxpVhlEwknOdwBhLV69lIxFNgdDjZ_eFjGlqtNo02BDucD4.TM7FsbxFPCvrVsHLkfhkq.kifpJJVMbHpnbGfG1TekWPn_77vm4atjXDeJ4WNIWkBjPFmzLeHt0QVrHhxDVVyTsQXPc76tcH0I5VuXBF4EbDJH_VpvRsiOW0udcP60wLSRF7s1G6sJpdmVe8tXN3NhSjxOHTJA19x.6GZRvcCcJODTEROtKgHlVNHwMqBhIUAS1rL57hVU40ZxYzDyH_s3cApGooPOLItCwdwqOcqHyODUK094hfr7YT2mPLGkF7T4.lS53x2AL_IelfFSsRdQRYjX2r6gRnIZjEdLU_T0TgxYyVjGOrUmsUxiyQBETj_aLC.37eGcVpz88dy96wj0mmaLjxRE11PE82vX3eopHYcX3y_mNjS.8I2gGR5rHfmHSrnQVqn73d6P0rY55.IOTGn_rx_B6LfeRuLiUHu3MHxAHwskZPlpA18xcTLsfU55.c6PTHOD0rokUJBvraelMbfUpthX6GnbaGVJsHKLvTOgUq4IWovI5KIvjcDJrtPuVv9lMJ.UHnbxuiZmRYxasBR179GiNzRFFL7zo8hKMxba2uIXCnadWf4wfvzTj27b5FymzOHhFLnpYZOlvTGdB6VygCMhwTNPlgaaJATYF8__8Sng069dWYxOcoYU1iwUHjg8RZ4Fxqc.odDXVemDewxedgH9BUJTKQKfnceOin1Kc3neV2ehP8oEEiY9l1Ud4cRj5ZXXHApW82gB4H7Vb1.9PhpdX2tT1riVr_ZXPA9MXpa56zIAMkRwOIx6eEyVl5NRF7VyipTMJXt.OUMSHjJoKnPtVFPYtTw5EhcsNq9N90tAfkxR11Z5ALGmw63w6Fvfd7wLB6KRvGmLOaS67CHcIg5BEsclqmmjGiQ.UIt0zeyCAZaKgrsirNhCoqeIUmeUj0lPMVJ_ssynzcyjc0yGCTau4EJOCVqLmbMI5N3x9QtaBKrA8PQ6oo6IJsLdWCEHBPe6C9NpqDQIhVx9ne93FKmRKiLZakJUk8jtLFm6VSlED9Du1fZZrcEDq_A7pN2reEWkqdzrd82KumtSj6vDzWguNgk0w.G.sSc9pDnBULNj6CDeUYqreb8nr51uZhIUrgUGK4Ceay3uxuOrnmcR.MZL.3TpbH5hYcJQ6HF9GMU8.xCz.QIbJWGG5mt33T.f.CK4oOXZRnxQjNhmRFA2d6XtSObZ0RXnIBJsnWQhtKt76jw6gMQBjkOPi_rYvodZckRaoSg1I5v5a0YQTQWohQrfRiT70zE3DopD5Wf1A.S5VzbdH.8uqr8HpMRwVZjdNOP676mEU26cs4vZGe2_Envn0.i0FZqedAzXX2ZtekFoh.qT21T_gok1CFa_ZbYcyWOW4wQV7lE7Mp0TbvCfDPK6lqgZIKGCU36Onp2NDjwM6ZpTBL0cmYxFNBk2yca.g2YNT1FAry6hzhSq7WsR2bg.DmY2j9uNVIu3X9mBESZQU8rVUhSrylRCMeL166zR2Sfr55Sx8THPO6L47vjpCjoQKzh3LbGC7U39MLAiNzkyCaOL7L7Nxcau0Xk.AG6D_NEPjC.WuGi0eDPWmWFxNKcK4jQdCts9BiPQ.r0oiaov8ra7.eFuuvHwvN6UOKVbGmX_ygqIXoM22LB5vOjWVDFO6zwdYqcZbH95gPzfULbtjWBCM5OdNREbvWls.yl5m7MtpfIE7LsDaXjaHqONVpgvvnu8kpUeJAQFQw1WOaJUN0ggj6Xv_e_47igr_BWBNEN3B6DetjiPGV6S75r.i4ZsmYeB3pvcyqn_QlHeQV98xRZ701IgQhXBwcB9xd_SoYTLjOm5KmNTP0oN3sGYFRKifSYfOtnbQjpXzPl3uUbD_0qKo4iebPwYGUWXibpoNQjww5.faOMDAoLbL8K2rcrvu6pUt6LzlWv4FVn.CZOAYgkYeZFjxOHN6tcmXwsTM1uBQY0S4Lo8nNox7qGSv23jI",mdrd: "fm6CAkBaHGOsmSXClvFrgA7fZLdDxUxuzfeen1RJe8w-1739180516-1.2.1.1-vV_Sx7lxMHxYEkLCXDlPsYcl8spA3UiQ_OUAZ7R2hrWxKN2SLis2dFHd5FeOhVLCPFDQliZwTAsjpsa9SPHujZMulFr24a_gXAyeVbSvZQLGFvGeHyRHPTWemPdIbkbNtmdCEBzX4wQxS0Fs9rkttXK4ptlHTl5OPFWIwheRy9VL2bpV9u8QsgEe67ztJXGSlF8SCNXWvOXD1JHXpW5TvASjXAbZHxDtOtzl4QWGzgb4BQGXcTz8ZdQaCOb3C1.FN.sqhlijj9mBXP.U_gNFs_0Ma5K2OPBLodZrZFq1dw6SlL7lIQ877u7L1UhqbaH8.APB_wWBVQB8WdapTmSmx.AGPs1gk_4fiK7ZlW.w6XqQiIcONgeriTTBTpJe6q_ncxpHRi6IZu14eQH_tV9OqwqP1smNz6NOOp_LnGfAdrWbP3azhHj8Oqawa3U4fhTIUB0SsOCN5PRTOcrAfLEb.TzpEJyAubCMMG1D5VwooYisyXfyt_mCfh_Tqge0dbewO1oGGv_rPfDnLIDMIVjEl5ZIWHZekhQxSRo2WS1RbdGS4m6BlHeTG1iMSn7PTSPPlEnlHrKIR8rumwGbNOdHypMIqtGXdlOgoVa7lB2HLIheyi1PMTR6X21MGj0VuQnD4XwtER54SFdouoHO3TE1fhNBnqzL2CY70UlVJ2MZCX6FJZ86hPIUmw6CGiBlHz0D7U71TA05L6YgZPpjGSu6urafpSJaOtQdnTFyySkUd6peWiZLvqJi.PaHyy2TT7G8o9.cmPvzvUp_erN0DU6HF_zjCaHnCmf49wLFM3gNMfMj6jyuA.JMqbNTmpkLzEb9g6HiUXjOZLEvBBg4mVpTM4YmXUkFJs3N9h2jhgcz8Afj6Q5CT1ET_6F5synDSRdN8Z5VWO1_ENBryX6B9.Bv.EYbtCjSY2vZSfnZy62c1nJ7QrdMO4odo4xqvcHVj4JfK3YrZd721YfZb1gMVb48KxYwuRQOZyFh3yk.pD9Mhnvgxb5mJb_1sb1Du_N0SSCKHIKBZzaWV9GbmrtImCniY7DTIrOCF2gyEM7Zxjs1cVWLvIyEHqNbNDt.aR52JQYLF1EIcGCLEyYMqyMw9hIXXCcnxThUnpie2byqt1t8dKGXNHT3KdHu_9VpbO3g9Hkmw1TVgNvjEp2llid_a1ChMGeLv27FE2t1W9947Tdk6pe_vU6NTbeWX1Xd8nf6p7PCKh5cwGeD1z_AURRs9F9jmpPIg0OJILG2CYFczGXRZNHrf7VeL.R1kkQfHv8xNn7ohqxFAmAStlOK9PJeZ9CsvmIJaY003Z.DhzZ0KQUUHs_tpLrT1e8.ppzgMZpWxx8dC545.o8lcQiBdSTPXboNYUntHYAs1bqxU6Xh5OXAy.XhekXh64W2f3l2HOlB44TPeWe0DAt5l6tDov98ifIXXU9pqETZo0EdimWj2oou2kDC0j9j3vktDAmxWWIDdgDY7xQ6Of1Pr4JRq7ujL1ngmz2rcRlAn3jik5uEs8cpEimwyRFcYpJEyoqLdDcoPPTgMy6pwytQhUWVnjgiLZOg_LLljmy4_h9dWDS8nQNPnUOOHwHQTnn6tv1Ax7Ls82CRoX3bFY1H7CO68Mut8aRxtZVEeDm_AjBMcfWQMO123F_Dx1_pjBP6rHEZ4EkWoKHHKtI0QR3fzBchZV2jpvNrv4IhAYjKorqv6RuUIR_XSMbTQ3XWb8m5g6CU1ZrRI6nXkk3m25B6GfiYojGAZgIYbjjs3BNe0kMKvqQZN6U2trBRONyp4ekrgQNgZqQ0SoVt"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fb25733c020610';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/post\/3506187492?__cf_chl_rt_tk=5Xml8ejssWaAti_V8xZSHyU44aCP7N13_oUC8SIOqNA-1739180516-1.0.1.1-RKzLyo5rkJ.gZzZGomVfDkrTNUkzP4AvwLVQbaGty4k" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>
Home · About · News · Docs · Terms