How to handle backoffice timezone issue?

1) When a user is in IST and the server is at EST,if the user enters date from backoffice create wizard as e.g. March 1st 10 AM 2017, in db it is saved as Feb 28th 23:30 EST.how to handle these in backoffice?

2)When a user is in EST and the server is also in EST, if he enters date as March 24, 00:00 :00 AM EST 2017,in db it is saved March 24th 1:00:00 AM 2017 EDT.how to handle this kind of daylight time situation?

3)In above situation , you will find list view timezone is EDT and editor Area timezone is EST.So the user dont know which value is stored in db?

Please help me in how to handle these kind of server-user timezone issues.Thanks in advance