I stored check-in/out time in database like the table below. When I create events It auto change my time events. I have tried to set timezone in AdvancedConfig to local or none or false but it still doesn't work.

Here is my config:

"header: {    
},
theme: false,
displayEventEnd:true,
firstDay: 1,
isRTL: false,
weekends: true,
fixedWeekCount: false,
weekNumbers:false,
height: 'auto',
contentHeight:'auto',
aspectRatio:'2',
eventLimit:'True',
timezone:'local',
defaultView:'dayGridMonth',
allDaySlot:true,
allDayText:'all-day',
axisFormat:'h(:mm)a',
minTime:'00:00:00',
maxTime:'24:00:00',
slotEventOverlap:true,
buttonText: {
    today: 'today',
    month: 'month',
    week: 'week',
    day: 'day'                
},
monthNames:['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
monthNamesShort:['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
dayNames:['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'],
dayNamesShort:['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
selectable:true,
selectHelper: true,
allDayDefault:false,
editable:true"

Someone please helps