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: "023022.mit-edu.top",cType: 'managed',cRay: '90f6745e2dc905b6',cH: '5PqX8s6QUu7hrM4pvNPQgsmgTlq7hNHS93XmSYzYtOo-1739131320-1.2.1.1-nuVfAS6u89bKu4C8OUYgAqjdRU8wvFyQdZooVBRsrDG5O5a8VvKZzUHMYNFXtlxK',cUPMDTk: "\/post\/0453971862?__cf_chl_tk=bjrveDQ6EEsIdWYzB6n7bEHOzky0Di.kAvgzSiz1ByA-1739131320-1.0.1.1-lpK9EQEDVp._oBlK2XpbQDqkCiQFnxr9ZS41wPFUgjg",cFPWv: 'g',cITimeS: '1739131320',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/0453971862?__cf_chl_f_tk=bjrveDQ6EEsIdWYzB6n7bEHOzky0Di.kAvgzSiz1ByA-1739131320-1.0.1.1-lpK9EQEDVp._oBlK2XpbQDqkCiQFnxr9ZS41wPFUgjg",md: "HIuG1T71wcAvpT1MPWjQm5J0E20ZikHiG4RxCUadXxg-1739131320-1.2.1.1-HN6icYe43zd0AfAjCzIVN76p_1BJb1lCpzAzCVDHb4TDgEw4_g93P5j3LuzJka80DXU1hxpGyhhphZYF8FAV1H43a7aWEtdiBEMpBlq0LDxxwMoPIfzoApV.wO4uT6BhLkrwXGwmEPY0Auqtyek.nCNL5GySC0QYTQxxnTUA5da7fAv7wBdR8dcYv.aTRM_f23PUuKikflI5spHLv8.k6WyS6N84yoLVceTZB5g59W8MO5vOK3lEBR1MZHVgEukXlr0d3sFGvSfNXYajtIXQikaWR29CVNU_0kZyzzMNLFZvDS8Ao5BbUAWlUk7UO7nBrRODCmWqimtaIZ_KHtZZ2WxAilH4Sxm92xAF4qEnjJ0ZMhleQj0K4qtLjLcS720EpHAm9e45e_1w_bXYf.M3D5d.3mJTiXIEq0Ll71H8dj.cXnGS7kjzpD14_SWyq_idFD1ZDTHrZrPiU1Hfk25ay8c3IreEJrWT73kmj4fduI6NfRF1WDzy0k9HDxaSmlpAJ0C3oV5VfgN8s3f1RH.KUoN3llLZ3s0dFCi.sjf1_AaE91J3xzJ7dPAYU1OBOyXtldtkyvBb2QCpjiYmjyO2uoslZ9dqSz0DCl2zqu.XreqC5Qnqh5Ac8ji30Cs5ZJ4U6Up8Y6FUSu8LApcm963PonW.gm83B363HL4HfxQdgY8WwasfEcJBGrKgMvk1DhLhD899L1bf.KQPlLEvflIIy_Ejac4.Fbrjw8tsVwcW99zCe8TAfJ5Vd14s1YLdehO8LKYE0ucv2uKjye.gQDupuUCzBq.r4ummGcuQxja.sDB_ecNpEweGG2YPPwINY5TEi7h6RVX1BEoVRP2jCwPG4OwdsJKBpZdjV8sTYVEKd6QAXgTSQn6VUPZDohW2UNz3314TlTmrQ9qrImNwZ2Zl89egaz3dI8Q5JLbZBiO2EOjgFfXY2.PxnxPN82UNlRswcEmEsW8L88dn7ADcHfwU6FLtzfqWL3bOO47XVTODS2clvrds9b5f99aQ02a0dP0h2SWkFPnBRqMT_nniZoL90CAC0ykq3elP0vonoSR8d0N.1rQf1fMiP1TEfz83_Byi69Y5CIk4S50ZJmzYb2ilhdXMQWr4gg7rsk5C_UFn7bocmDwHgOOgkEa_nQ6UUKTYDjQcey1.pe0rYuCQIf5UikmOYBuDgkFKNgGctXHrMxo1M5YbPzoW4WqSy.qEGvxrFLX71c27hzBk.5EJpX.iY7a7_tIdAJDYV7SUTsatdLAGAsNuNODMQvwpsuc2wdqlAaVjqzcctNL0ENl_d1JOlQNA7NakjWnMT0lPwVRK0f_DW24DXu3sWVNqY4nxWlgTvXEpZSCS9xC6J17gxz6qLbNWFPgx_5BsWSOGhTB.ufxK4WtU203fnKohG1RWL1NKZuH_5GKO7qRmsspvl5SmChvjMHjSVTZfcyrVdvQaqY5Dp9_3KU0TZzmpm6GjiaYKz2lS_uWbtZFKP9Y9aMAK6ICPkv7TY.JAFvSpN7BMCFxI7019UqsSGhxr_92o9jflqaKyZ_R6SgH7bKDhVpn3gH3jGzDLPYAugFtljozex7K21ilN_RJPT63NPhe1qzyuBpTJ8odxPnx50NUvH39QJ0vS4bEpCf4HGZcj17UnwTeR2UeHdxJXPrJfTUrHyrBVh0HkoDLpIMp05FsRT0Z5NcUXfpHHhAOxN5jN78LC_NZJsU77pX5OJrETTZgASpFvyDuMr5kAaj6fWEB4jus8vu6yGJ427x1JdblBZo5nEVpwcRPImlZt4EODGwYqSWkeVr0RWmBMaLsJU.mmX.eLK6cM40fsgozpIyf2WPfuCeIojBbdNM81ZI7pmdAc.pq05lvBS9Kz.pv7IvEJDgzh0D2r2UBZJ3QOP6wfPgFS1UWj1x8xovc1a5OvO7V7eRKeeOe_Ya6AHBz8M9q8vSyzjs3Hl0vvmx2MiZzfS5Xrqn9j6t8FdKxYRgxeKSvMcAHAXc_PWboHFxjtJFLDxkpoV4pVxFeCBFWp4qEXypQWl6Dittx5edzFnvdmKBEGQVmxQ9RprWKdyWFsU4G3uHJfiFpMqy5j4FeeZRlwd41Kpv647O851Fb7cRnz4dx8.Ms2sQ53HvfGx2HB1U8ArEgIsK0aIU8c.kCKkx0IwtXa3PcFR_kf3an4kYxSgWM7fjkRNWTw2hoI7FdUYI7LwOEYc0bpvFtkjHOOIf0B41ua2WE",mdrd: "ct.o8nKsIxLM_g86bDFDN7paTxoutqDzDZeks2GNyHM-1739131320-1.2.1.1-6XLncCkpyzikLrpogVFUy7eyS69Slrc4TQsGOXe.efEN8.VrSf1KFdFw3bPTIc9TWEcFqqMKT1Acb86A4.l1zD_KP2Mbv6zsKvabWrmxJByLzpBuGkHH4mX0xyGqBjyAHkLhJm0uRGF7iRSYyb04oeNTY0kF2uZgw89yvjffVNOPlyGLYcVYQ0aybyZFUEL6QTLiQcU3d1p0HMmfXnczomfZyr047J6E6daKIi76hjbEmiWNngB9DQIdZEORVkWrqDNVktsPmA3gHFf5y2rcCxuYsSRxJP_mckJYPqog_IX7MGKchTNYgrpaHFOi6xIS1_XAsxL0qbbaMM9ckdSZwjdwP2KG_QaEAaBlNjFd.NrQyOa7Njr.ghJuy7HfERehPqzkQXhaUIH25E7jF5P4Vs_xvYTQInzpLpLPZJ6ggTlP3KD1PpJCIXlK.F8tpCgcbJ3RgZF0hGuOam5anora6Ub_4Kdslkpv2yYcFdxeHLxWOop3nPCj5WnuwtCjOBJiZrrFZAgtjw_9rdPZewYMUySVqwHOc4KKfDZ1YtgD4AlDASfJmMHWpGGJRbx0lKVkWCZ7pHCTEv2eBqb5ramNwEUigTHpzjGIyshHBMSXv9bHE4VzaUE2qnnqVVr_eEjA9L3vc.n7w_RMWkXuuwSsEVDs3qOsang4sOVcdqDEXpzP2Gf1umhPWgfp_QhUbe.fPtzIqt0lTTA8qGid.hgKkIzMpJNx8CDzvCnAywtVQ229k3uEPzpAcu2oCa05X5u4tdYidh9sdb_JIDCRHDSmcucx3kOLlN0LZLWpQk8lmQXaeOzSehyWqao4_RS1DTHRBzpjfqCFAYEvy8lNY3tCqAcrGNXK_GPu2v9_PpZq4l12pbrOyZqfP5GuIw.JWSdSvcEMbf.ONnI4eHp4SOMDxSm7l9vhZ3ic5SzuNceP5p.JwzQmUVg2VaTAmj2EEOeYumMJBMPWSWSc7RwJQ6sqPGHAnRNqII0ncBbrqX.XJuIWrjFqFVw4zOgAYyqBVrZjvtrjh0spHYiceGv0TH9kdEGqzx3JbmZuFN_KemsEnCFIrv0YVaRrtmrPasn369jMWSPGV7CeYX8DLfXMmOK1MyHPgy6qRYB8MDzEfW0G9hIw5xYVD2xCzvRKDBIEWsR1tS6leVdfN3DodWtQDXpzIWTu8aim0E5TlaizkYarG5mqaqBjwmWNZjqFuEAWb1yvHR9MNd2_MzBhNFK8QMX7dStiFRk9eb4osu1HH1kCmnRpaDy4vsdxGWOhEwg69xnJSoS0AEES1UlLNSPNzW8l8vgiWFEm2wARbE0OBoI2Sv3xUJ1I5fIEEeFmqggPhpbcFb.hpWB83i0MaUpY8z1LiGgEvdg6wE5PAxeMrQVILO57RG4z1YLZx0E4n65b.ZOsUejeayvlY3AQTM5C8bMR6At8jzPRD4bUXW.UanPYMXPv3gV6yG0VWqcKssuhMeMNidr4xnaw1GqEBjsk6S4cAhReIjdytSNV97hjEUcvdJUXR92r4sKNTvcGBaCv0DRIYkmPNyViJWzV9Q3fZ7Ce.4PuzyLQOwnmZ2WWCefKIQipMribCyNhst.ijAU6pumGM7GhZMiGMxioRcwiSmthap25XCpk5RkLmfmMT_rwe9u_b7H3eZOjRjsiqj94fFqUN2Ne2u84vVwV.PP8TbLVWR5g4vZ3FU_2AgU5b89rgUkYI6BWe1.d7skqPG3mlTlOVjgjZrkLlsg11EzEwJD5462nnE5c2htk4mwrOlMPraxHUUBtZH4KnjNJFJ9pW5gs"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f6745e2dc905b6';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\/0453971862?__cf_chl_rt_tk=bjrveDQ6EEsIdWYzB6n7bEHOzky0Di.kAvgzSiz1ByA-1739131320-1.0.1.1-lpK9EQEDVp._oBlK2XpbQDqkCiQFnxr9ZS41wPFUgjg" + 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