Andrey “Rarst” Savchenko details an exciting and long-awaited improvement to the Date/Time component in WordPress 5.3, which was made possible by raising the required PHP version for WordPress core to 5.6. ⌛
Andrey explains the Date/Time component previously relied on the “WordPress timestamp,” which caused many bugs and lacked “interoperability with upstream PHP or any external systems.” 🐛
It is “impossible” to remove WP timestamps without breaking backwards compatibility, so while their use in core is deprecated and documentation is improved, Andrey doesn’t recommend retrieving or localizing time with the WP timestamp.