The date format in the sitemap <lastmod> tag is incorrect. This was noticed when checking Google Webmaster tools.
An invalid date was found. Please fix the date or formatting before resubmitting.
The spec states that the date should be in W3C Datetime format and the the time portion is optional. However it appears that Google does not follow standard and does not allow the time portion. https://www.sitemaps.org/protocol.html#xmlTagDefinitions
Make the <lastmod> follow this format <lastmod>YYYY-MM-DD</lastmod>
The date format in the sitemap
<lastmod>tag is incorrect. This was noticed when checking Google Webmaster tools.An invalid date was found. Please fix the date or formatting before resubmitting.The spec states that the date should be in W3C Datetime format and the the time portion is optional. However it appears that Google does not follow standard and does not allow the time portion. https://www.sitemaps.org/protocol.html#xmlTagDefinitions
Make the
<lastmod>follow this format<lastmod>YYYY-MM-DD</lastmod>