English is not my native language and I am confused when writing about midnight of some day. I am mostly using 24h-format on every day basic, so I want to make sure how to use 12h-format properly.
When I am informing people they can do something between 19 April (today) 9:00 till midnight/end of the day on 22 April. How do I write it properly?
You can sign in to my diary/visit me etc. from 19th (9am) of April until 22nd of April (12pm)
Soo... Is 22 April 12pm the same as 23 April 00am? (analogical 22 April 12:30pm is the same as 23 April 00:30am?)
What is the accepted practice?