Anonymous 10/07/2019 (Mon) 17:22:00 No.11536 del
Right click on a timestamp, select Inspect, in inspector find a "data-time" property and note the value number of this property, for example "1570452502". This is a so-called Unix timestamp which is a number of seconds elapsed since 1970-01-01 00:00:00 GMT+0 (leap seconds ignored). You can then use any tool to convert it to a human readable format.