echarts: https://gallery.echartsjs.com/explore.html#sort=rank~timeframe=all~author=all
clock
https://gallery.echartsjs.com/editor.html?c=xBJd0b_nNf
Gauge
https://www.dbface.com/assets/echarts/doc/example/gauge2.html#-en
https://gallery.echartsjs.com/editor.html?c=xH1vxib94f
https://gallery.echartsjs.com/editor.html?c=gauge

https://medium.com/@Ovilia/making-a-covid-19-map-with-echarts-and-leaflet-30fdcd8739c6

Get Points:
http://geojson.io/#map=12/24.4417/4374.4266

calendar
https://gallery.echartsjs.com/editor.html?c=calendar-pie
https://gallery.echartsjs.com/editor.html?c=calendar-effectScatter
https://gallery.echartsjs.com/editor.html?c=calendar-lunar
https://gallery.echartsjs.com/editor.html?c=xH1NFOY-Tz
https://gallery.echartsjs.com/editor.html?c=xJEqrZ2kxy
https://gallery.echartsjs.com/editor.html?c=xr1_gWqK-G